SqlDataSource.Select Error: Unable To Cast Object Of Type 'System.Data.DataView' To Type 'System.String'.

Oct 19, 2006

I am trying to put the data from a field in my database into a row in a table using the SQLDataSource.Select statement. I am using the following code:
 FileBase.SelectCommand = "SELECT Username FROM Files WHERE Filename = '" & myFileInfo.FullName & "'"
 myDataRow("Username") = CType(FileBase.Select(New DataSourceSelectArguments()), String)
But when I run the code, I get the following error:

Server Error in '/YorZap' Application. Unable to cast object of type 'System.Data.DataView' to type 'System.String'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidCastException: Unable to cast object of type 'System.Data.DataView' to type 'System.String'.

Source Error:

Line 54: FileBase.SelectCommand = "SELECT Username FROM Files WHERE Filename = '" & myFileInfo.FullName & "'"
Line 55: 'myDataRow("Username") = CType(FileBase.Select(New DataSourceSelectArguments).GetEnumerator.Current, String)
Line 56: myDataRow("Username") = CType(FileBase.Select(New DataSourceSelectArguments()), String)
Line 57:
Line 58: filesTable.Rows.Add(myDataRow)
Source File: D:YorZapdir_list_sort.aspx    Line: 56

Stack Trace:

[InvalidCastException: Unable to cast object of type 'System.Data.DataView' to type 'System.String'.]
ASP.dir_list_sort_aspx.BindFileDataToGrid(String strSortField) in D:YorZapdir_list_sort.aspx:56
ASP.dir_list_sort_aspx.Page_Load(Object sender, EventArgs e) in D:YorZapdir_list_sort.aspx:7
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +13
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +45
System.Web.UI.Control.OnLoad(EventArgs e) +80
System.Web.UI.Control.LoadRecursive() +49
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3743


Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.210
Please help me!

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Unable To Cast Object Of Type 'System.String' To Type 'System.Web.UI.WebControls.Parameter'.

Jun 19, 2008

I'm getting this error on a vb.net page the needs to execute two separate stored procedures.  The first one, is the main insert, and returns the identity value for the ClientID.  The second stored procedure inserts data, but needs to insert the ClientID returned in the first stored procedure.  What am I doing wrong with including the identity value "ClientID" in the second stored procedure? 
Unable to cast object of type 'System.String' to type 'System.Web.UI.WebControls.Parameter'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidCastException: Unable to cast object of type 'System.String' to type 'System.Web.UI.WebControls.Parameter'.Source Error:




Line 14: If li.Selected Then
Line 15: InsertClientCompanyType.InsertParameters("CompanyTypeID").DefaultValue = li.Value
Line 16: InsertClientCompanyType.InsertParameters("ClientID") = ViewState("ClientID")
Line 17:
Line 18:
Source File: C:InetpubwwwrootIntranetExternalAppsNewEmploymentClientNewClient.aspx.vb    Line: 16
Here is my code behind... What am I doing wrong with grabbing the ClientID from the first stored procedure insert? 
 
Protected Sub InsertNewClient_Inserted(ByVal sender As Object, ByVal e As SqlDataSourceStatusEventArgs)ClientID.Text = e.Command.Parameters("@ClientID").Value.ToString()ViewState("ClientID") = e.Command.Parameters("@ClientID").Value.ToString()End SubProtected Sub Submit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Submit.ClickInsertNewClient.Insert()For Each li As ListItem In CompanyTypeID.Items
If li.Selected ThenInsertClientCompanyType.InsertParameters("CompanyTypeID").DefaultValue = li.ValueInsertClientCompanyType.InsertParameters("ClientID") = ViewState("ClientID")InsertClientCompanyType.Insert()End IfNextEnd Sub

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Dec 31, 2007

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Unable To Cast COM Object Of Type 'System.__ComObject' To Class Type 'System.Data.SqlClient.SqlConn

May 17, 2006

Dear all,

I am stuck with a SSIS package and I can€™t work out. Let me know what steps are the correct in order to solve this.
At first I have just a Flat File Source and then Script Component, nothing else.

Error:





[Script Component [516]] Error: System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to class type 'System.Data.SqlClient.SqlConnection'. Instances of types that represent COM components cannot be cast to types that do not represent COM components; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface. at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.HandleUserException(Exception e) at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.AcquireConnections(Object transaction) at Microsoft.SqlServer.Dts.Pipeline.ManagedComponentHost.HostAcquireConnections(IDTSManagedComponentWrapper90 wrapper, Object transaction)



Script Code (from Script Component):



' Microsoft SQL Server Integration Services user script component
' This is your new script component in Microsoft Visual Basic .NET
' ScriptMain is the entrypoint class for script components

Imports System
Imports System.Data.SqlClient
Imports System.Math
Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper
Imports Microsoft.SqlServer.Dts.Runtime.Wrapper


Public Class ScriptMain
Inherits UserComponent


Dim nDTS As IDTSConnectionManager90
Dim sqlConnecta As SqlConnection
Dim sqlComm As SqlCommand
Dim sqlParam As SqlParameter


Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)

Dim valorColumna As String
Dim valorColumna10 As Double


valorColumna = Row.Column9.Substring(1, 1)

If valorColumna = "N" Then
valorColumna10 = -1 * CDbl(Row.Column10 / 100)
Else
valorColumna10 = CDbl(Row.Column10 / 100)
End If

Me.Output0Buffer.PORCRETEN = CDbl(Row.Column11 / 100)
Me.Output0Buffer.IMPRETEN = CDbl(Row.Column12 / 100)
Me.Output0Buffer.EJERCICIO = CInt(Row.Column2)
Me.Output0Buffer.CODPROV = CInt(Row.Column7)
Me.Output0Buffer.MODALIDAD = CInt(Row.Column8)
Me.Output0Buffer.NIFPERC = CStr(Row.Column3)
Me.Output0Buffer.NIFREP = CStr(Row.Column4)
Me.Output0Buffer.NOMBRE = CStr(Row.Column6)
Me.Output0Buffer.EJERDEV = CDbl(Row.Column13)

With sqlComm
.Parameters("@Ejercicio").Value = CInt(Row.Column2)
.Parameters("@NIFPerc").Value = CStr(Row.Column3)
.Parameters("@NIFReP").Value = CStr(Row.Column4)
.Parameters("@Nombre").Value = CStr(Row.Column6)
.Parameters("@CodProv").Value = CInt(Row.Column7)
.Parameters("@Modalidad").Value = CInt(Row.Column8)
.Parameters("@ImpBase").Value = valorColumna10
.Parameters("@PorcReten").Value = CDbl(Row.Column11 / 100)
.Parameters("@ImpReten").Value = CDbl(Row.Column12 / 100)
.Parameters("@EjerDev").Value = CDbl(Row.Column13)

.ExecuteNonQuery()
End With


End Sub
Public Overrides Sub AcquireConnections(ByVal Transaction As Object)

Dim nDTS As IDTSConnectionManager90 = Me.Connections.TablaMODELO80
sqlConnecta = CType(nDTS.AcquireConnection(Nothing), SqlConnection)

End Sub
Public Overrides Sub PreExecute()

sqlComm = New SqlCommand("INSERT INTO hac_modelo180(Ejercicio,NIFPerc,NIFReP,Nombre,CodProv,Modalidad,ImpBase,PorcReten,ImpReten,EjerDev) " & _
"VALUES(@Ejercicio,@NIFPerc,@NIFReP,@Nombre,@CodProv,@Modalidad,@ImpBase,@PorcReten,@ImpReten,@EjerDev)", sqlConnecta)
sqlParam = New SqlParameter("@Ejercicio", Data.SqlDbType.SmallInt)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@NIFPerc", Data.SqlDbType.Char)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@NIFReP", Data.SqlDbType.Char)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@Nombre", Data.SqlDbType.VarChar)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@CodProv", Data.SqlDbType.TinyInt)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@Modalidad", Data.SqlDbType.SmallInt)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@ImpBase", Data.SqlDbType.Decimal)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@PorcReten", Data.SqlDbType.Decimal)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@ImpReten", Data.SqlDbType.Decimal)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@EjerDev", Data.SqlDbType.Decimal)
sqlComm.Parameters.Add(sqlParam)

End Sub


Public Sub New()

End Sub
Public Overrides Sub ReleaseConnections()
nDts.ReleaseConnection(sqlConnecta)
End Sub

Protected Overrides Sub Finalize()
MyBase.Finalize()
End Sub
End Class







Thanks a lot for your help


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Apr 23, 2007

I get the following message in the vs2005 querybuilder when i do a preview:



***********************************
SQL Execution Error.

Executed SQL statement: SELECT Schoolindex, Variant, VVSchool, [index], indincl, VVRuimtes, School FROM School WHERE (Schoolindex = @PARAM1)



Error Source: SQL Server Compact Edition ADO.NET Data Provider


Error Message: @PARAM1 : Unable to cast object of type 'System.Data.SqlTypes.SqlInt32 to type System.IConvertable'.
****************************************

The same querypreview works fine without the parameter:



SELECT Schoolindex, Variant, VVSchool, [index], indincl, VVRuimtes, School FROM School WHERE (Schoolindex = 186)



Can anybody tell me why this is?
And tell me a way to get the tableadapter working?



Anne-Jan Tuinstra

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Aug 1, 2007

Unable to cast object of type 'System.String' to type 'System.Web.UI.DataSourceSelectArguments'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidCastException: Unable to cast object of type 'System.String' to type 'System.Web.UI.DataSourceSelectArguments'. 
Hi, In my pageload i have data retriving from a page and i want it to load it in the GridView. i have GridView and SqlDataSource but when the page loads i am getting the above error. i am not sure what im doing wrong here. i tried different ways. but no luck Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not IsPostBack Thenfp = CType(Context.Handler, Member)
'lblEmail.Text = fp.EMM.ToString
'this labelbox for Email address is under the Name'lblEmail.Text = fp.EmailAddress.ToString
 
 Dim conn As SqlConnection = New SqlConnection(ConfigurationManager.ConnectionStrings("imacstestConnectionString").ConnectionString)
Dim cmd As SqlCommand = New SqlCommand("SELECT , [fname], [mname], [lname], [address], [city], [state], [zip], [phone] FROM [t_CustomerAcct] WHERE = @email", conn)cmd.Parameters.AddWithValue("@email", fp.EMM.ToString)
conn.Open()
SqlDataSource1.Select(cmd.ExecuteScalar())
'.ExecuteScalar()
 
conn.Close()
End If
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Nov 27, 2007



hi i dont know how to do type casting.

this.Variables.ObjVariable this objVariables i have create in variable place below like this



Name:Variable datatype int32 values 0

Name: NumberofRowsdatatype int32 values 10000

Name: ObjVariable datatype Object



My code





public override void CreateNewOutputRows()

{

/*

Add rows by calling the AddRow method on the member variable named "<Output Name>Buffer".

For example, call MyOutputBuffer.AddRow() if your output was named "MyOutput".

*/

System.Data.OleDb.OleDbDataAdapter oLead = new System.Data.OleDb.OleDbDataAdapter();

//System.Data.Odbc.OdbcDataAdapter oLead = new System.Data.Odbc.OdbcDataAdapter();

//SqlDataAdapter oLead = new SqlDataAdapter();

System.Data.DataTable dt = new System.Data.DataTable();

DataSet ds = (DataSet)this.Variables.ObjVariable; // here i am getting error

ds.Tables.Add(dt);


ADODB.Record rs = new ADODB.Record();



oLead.Fill(ds, rs, "Variables");

foreach (DataRow row in dt.Rows)

{

{

Output0Buffer.AddRow();

Output0Buffer.Column = (int)row["Column"];

Output0Buffer.Column1 = row["Column1"].ToString();

Output0Buffer.Column2 = row["Column2"].ToString();

}

}


}

}

This is the error

Unable to cast object of type 'System.Object' to type 'System.Data.DataSet'.

at ScriptMain.CreateNewOutputRows()

at UserComponent.PrimeOutput(Int32 Outputs, Int32[] OutputIDs, PipelineBuffer[] Buffers)

at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.PrimeOutput(Int32 outputs, Int32[] outputIDs, PipelineBuffer[] buffers)



thanks

kedaranth

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Aug 13, 2007

Hi,
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Jul 2, 2007

I'm getting the following error:  Unable to cast object of type 'System.Xml.XmlTextReaderImpl' to type 'System.Xml.XmlTextReader'. This works in .net 1.1 but having issues in the conversion to 2.0.
Public Function RunSPReturnXMLReader(ByVal strSP As String, ByVal ParamArray params() As SqlParameter) As System.Xml.XmlTextReader
Dim objHelperConnection As SqlConnectionobjHelperConnection = New SqlConnection(sConnect)Dim myXmlReader As System.Xml.XmlReader = objHelperCommand.ExecuteXmlReader()
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End Function
 
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Feb 2, 2008

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Oct 4, 2006

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TITLE: Microsoft Visual Studio
------------------------------

Unable to cast COM object of type 'Microsoft.SqlServer.Dts.Runtime.Wrapper.PackageNeutralClass' to interface type 'Microsoft.SqlServer.Dts.Runtime.IObjectWithSite'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{FC4801A3-2BA9-11CF-A229-00AA003D7352}' failed due to the following error: The application called an interface that was marshalled for a different thread. (Exception from HRESULT: 0x8001010E (RPC_E_WRONG_THREAD)).

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Aug 21, 2006

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I tried the following strings for connecting

Dim connectionString As String = "Data Source=localhostSQLEXPRESS;Initial Catalog=TimeSheet;Trusted_Connection = true"

Dim connectionString As String = "Data Source=localhostSQLEXPRESS;Initial Catalog=TimeSheet;Integrated Security=SSPI"



I am not running the webpage in a virtual directory but in

C:Inetpubwwwrootusercontrol

and I have a simple index.html that tries to read from an sql db but throws

the error

System.Security.SecurityException: Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet)
at System.Security.PermissionSet.Demand()
at System.Data.Common.DbConnectionOptions.DemandPermission()
at System.Data.SqlClient.SqlConnection.PermissionDemand()
at System.Data.SqlClient.SqlConnectionFactory.PermissionDemand(DbConnection outerConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection,

etc etc

The action that failed was:
Demand
The type of the first permission that failed was:
System.Data.SqlClient.SqlClientPermission
The Zone of the assembly that failed was:
Trusted


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Dec 20, 2006

I have an application which runs successfully on a couple of my customer's machines but fails on a third. It seems to fail when opening the database:

Unable to cast COM object of type 'ADODB.CommandClass' to interface type 'ADODB._Command'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{B08400BD-F9D1-4D02-B856-71D5DBA123E9}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
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Just in case you think it could be an obvious registry problem: when I started getting the current error I thought that maybe the registry needed updating and I merged the following lines into onto the target machine (from my dev machine):

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOTInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}]
@="_Command"

[HKEY_CLASSES_ROOTInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}ProxyStubClsid]
@="{00020424-0000-0000-C000-000000000046}"

[HKEY_CLASSES_ROOTInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}ProxyStubClsid32]
@="{00020424-0000-0000-C000-000000000046}"

[HKEY_CLASSES_ROOTInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}TypeLib]
@="{EF53050B-882E-4776-B643-EDA472E8E3F2}"
"Version"="2.7"

[HKEY_LOCAL_MACHINESOFTWAREClassesInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}]
@="_Command"

[HKEY_LOCAL_MACHINESOFTWAREClassesInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}ProxyStubClsid]
@="{00020424-0000-0000-C000-000000000046}"

[HKEY_LOCAL_MACHINESOFTWAREClassesInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}ProxyStubClsid32]
@="{00020424-0000-0000-C000-000000000046}"

[HKEY_LOCAL_MACHINESOFTWAREClassesInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}TypeLib]
@="{EF53050B-882E-4776-B643-EDA472E8E3F2}"
"Version"="2.7"


but, no change alas.

All three machines are running Windows 2000.

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TITLE: Microsoft SQL Server Management Studio
------------------------------
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------------------------------
BUTTONS:
OK
------------------------------

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.
Everything works fine when I run it from my computer. When I try to run it from a network share I get the following error,

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Jan 4, 2005

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Sub Page_Init(sender As Object, e As EventArgs)
Dim txtName As New TextBox()
Dim txtPart As New TextBox()
Dim txtEach As New TextBox()
Dim txtTotal1 As New TextBox()
Dim txtSubtotal As New TextBox()
Dim txtTax As New TextBox()
Dim txtShipping As New TextBox()
Dim txtTotal2 As New TextBox()

Dim prod_id As Integer
Dim id As Integer
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Thanks !SqlConnection conn = new SqlConnection(DbConnectionString);
conn.Open();
SqlCommand cmd = conn.CreateCommand();
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Dec 25, 2007



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I have already installed
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Microsoft .NET Compact framework 2.0,
SQL Server 2005 Compact edition

But when I deploy the application in the PDA thro' cab file and try to run the application I am getting the below error at run time.

Could not load type
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With Regards,
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My stored procedure has the following parameter definition:

@Length decimal(9,3)

My problem is that if someone types a value bigger than 999999 in the textbox he will get for sure the following error:

System.Data.SqlClient.SqlException: Error converting data type numeric to decimal.

I don't know how to either make sql or C# to truncate the value or catch the exception to automatically assign 0 to the parameter.

Please Help.
Moshe

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Aug 31, 2006

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Mar 21, 2007

Reporting services is configured to use a custom security extension in the following Environment.

Windows xp

IIS 5.0

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when i go to http://servername/reportserver , the logon.aspx does not load and i get the following error message :

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chi

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May 10, 2006



Hi,

I am trying to make a mobile application work, but I get the following error. The operating system on Pocket PC is Microsoft® Windows Mobile„¢ 2003 Second Edition. Any ideas? Thanks in advance.

The followings are the error and my codes:

System.TypeLoadException was unhandled
Message="Could not load type 'System.Data.SqlServerCe.SqlCeDataAdapter' from assembly 'System.Data.SqlServerCe, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845DCD8080CC91'."
StackTrace:
at SQLMobile.Form1.Form1_Load()
at System.Windows.Forms.Form.OnLoad()
at System.Windows.Forms.Form._SetVisibleNotify()
at System.Windows.Forms.Control.set_Visible()
at System.Windows.Forms.Application.Run()
at SQLMobile.Form1.Main()



Codes:

Private Sub FillGrid()

Dim filename As New String _

("Program FilesSQLMobilesqlmobile.sdf")

Dim conn As New SqlCeConnection("Data Source=" + filename)

Dim selectCmd As SqlCeCommand = conn.CreateCommand()

selectCmd.CommandText = "select Destination from flightdata"

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Dim ds As New DataSet()

adp.Fill(ds)

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Oct 30, 2007

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To my knowledge, I have not changed anything about this particular data flow within the past couple of days. I have verified that the value is coming in as an integer.

Any help would be greatly appreciated.

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Mar 6, 2008

I created a function called Temperature in VB to be used as a UDF in SQL2005. I get the error listed below. Any thoughts?


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RETURNS Float

AS EXTERNAL NAME Fluids_VB6.[Fluids_VB6.FluidProperties.Fluids].Temperature

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select dbo.temperature('R22','t','e','225.6','0')

Got this:


Msg 6522, Level 16, State 2, Line 1

A .NET Framework error occurred during execution of user defined routine or aggregate 'Temperature':

System.InvalidCastException: Conversion from type 'SqlBoolean' to type 'Boolean' is not valid.

System.InvalidCastException:

at Microsoft.VisualBasic.CompilerServices.Conversions.ToBoolean(Object Value)

at Fluids_VB6.FluidProperties.Fluids.Setup(Object& FluidName)

at Fluids_VB6.FluidProperties.Fluids.CalcSetup(Object& FluidName, Object& InpCode, Object& Units, Object& Prop1, Object& Prop2)

at Fluids_VB6.FluidProperties.Fluids.CalcProp(Object& FluidName, Object& InpCode, Object& Units, Object& Prop1, Object& Prop2)

at Fluids_VB6.FluidProperties.Fluids.Temperature(Object FluidName, Object InpCode, Object Units, Object Prop1, Object Prop2)

Thanks

Buck

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Apr 24, 2007

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One of the fields in my textfile contains the value '0' or a date. If it's '0' it should be converted to the Null Value. The column in which it has to be saved is of type smalldatetime.



This is the code of my script where I want to check the value of the field in my textfile and convert it to a date or to Null.



Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)

If Row.cdDateIn = "" Or Row.cdDateIn= "0" Then

Row.cdDateInCorr = CDate(DBNull.Value)

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Row.cdDateInCorr = CDate(DBNull.Value)

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End If

End Sub



The error that I get is:

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Hello experts,

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The output windows returns a message:

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Ravie.

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Hi,

I have created a web part in ASP.Net. this web part is extracting data from the sql server database and displaying it on the web part page.
This web part is working fine with asp.net application, but when i deploy it with MOSS. it is reaising security exception error like.

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pls reply me on sanjiv.singh@kpitcummins.com.

thanks you so much.

Regards,
Sanjiv Singh

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