SqlDataAdapter dataAdapter = new
SqlDataAdapter(strCommand, strConnection);
DataSet dataset = new DataSet();
dataAdapter.Fill(dataset, "Products");
SqlCommandBuilder bldr = new
SqlCommandBuilder(dataAdapter);
DataTable dataTable = dataset.Tables[0];
dgCustomer.DataSource = dataTable;
dgCustomer.DataBind();
}
when i run this code, error like this appear :
Server Error in '/Registeration' Application.
SQL Server does not exist or access denied. 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.Data.SqlClient.SqlException: SQL Server does not exist or access
denied.
Source Error:
Line 41: DataSet dataset = new DataSet();
Line 42:
Line 43: dataAdapter.Fill(dataset, "Products");
Line 44: SqlCommandBuilder bldr = new SqlCommandBuilder(dataAdapter);
Line 45:
Source File:
e:asp.net
egisteration
egister.aspx.cs Line: 43
SqlDataAdapter dataAdapter = new SqlDataAdapter(strCommand, strConnection);
DataSet dataset = new DataSet();
dataAdapter.Fill(dataset, "Products");
SqlCommandBuilder bldr = new SqlCommandBuilder(dataAdapter);
DataTable dataTable = dataset.Tables[0];
dgCustomer.DataSource = dataTable;
dgCustomer.DataBind();
} }
when i run this code, error like this appear :
Server Error in '/Registeration' Application.
SQL Server does not exist or access denied. 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.Data.SqlClient.SqlException: SQL Server does not exist or access denied.Source Error:
Line 41: DataSet dataset = new DataSet();Line 42: Line 43: dataAdapter.Fill(dataset, "Products");Line 44: SqlCommandBuilder bldr = new SqlCommandBuilder(dataAdapter);Line 45: Source File: e:asp.net egisteration egister.aspx.cs Line: 43 Stack Trace:
I'm reading XML data into a DataTable that is populated into a datagrid. From here I need to update database and wanted to know how to Fill a DATA ADAPTER with a DATA TABLE? I'm familiar with updating using a SQL command, but in this case, i have the dataTable already created from XML. Please help. Thanks,
For some reason I've had trouble with this today... can anyone provide me with a generic code snippet that programatically allows me to select data from a database limited by a parameter and then fills a datatable?
Hi,I am unable to load data in dataset via sqlconncetion object. Always i get error at ds.fill.Thanks in advance. PLS Help.Sudipta Datta www.geocities.com/dattasudipta
This is the first time I've tried creating an "execute sql task" with a "full result set".
I've read in the documentation that I must set the resultname to 0, which is done, and that the variable must be of type object. Also done.
[Execute SQL Task] Error: Executing the query "select * from blah" failed with the following error: "The SelectCommand property has not been initialized before calling 'Fill'.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
Has anyone else had success with a full result set?
I thought I'd post this quick problem and answer, as I couldn't find the answer when searching for it. I tried to call a stored procedure on SQL Server 2000 using the System.Data.SqlClient objects, and was not expecting any unusual issues. However when I came to call the Fill method I received the error "Arithmetic overflow error converting expression to data type int." My first checks were the obvious ones of verifying that I'd provided all the correct datatypes and had no unexpected null values, but I found nothing out of order. The problem turns out to be a difference on the maximum values for integers between C# and SQL Server 2000. Previously having hit issues with SQL Server integers requiring Long Integer types in VB6, I was aware that these are 32-bit integers, so I was passing in Int32 variables. The problem was that Int32.MaxValue is not a valid integer for SQL Server. Seeing as I was providing an abitrary upper value for records-per-page (to fetch all in one page), I was simply able to change this to Int16.MaxValue and will hit no further problems as this is also well beyond any expected range for this parameter. If anyone can name off the top of their heads what value should be provided as a maximum integer for SQL Server 2000, this might be a useful addition, but otherwise I hope this spares others some hunting if they also experience this problem. James Burton
Hi, What is the difference b/w sqldatareader and sqldataadapter? For what purpose are they used in a database connection & how do they differ from each other? Pls explain me in detail.Regards Vijay.
I hope someone has seen this one...I've got a very simple web method that returns a DataTable from my database. It worked fine until I changed this line of code:
string SqlString = @"SELECT Timestamp, Confession FROM Confessions WHERE ConfessionID = ? ORDER BY Timestamp desc";
To this line of code:
string SqlString = @"SELECT Timestamp, Confession FROM Confessions WHERE ConfessionID = ? AND CategoryID = ? ORDER BY Timestamp desc";
Here is the complete webmethod:
[WebMethod] public DataTable GetConfession (int ConfessionID, int CategoryID) {
DataTable dt = new DataTable(); dt.TableName = "XMLConfession";
string SqlString = @"SELECT Timestamp, Confession FROM Confessions WHERE ConfessionID = ? AND CategoryID = ? ORDER BY Timestamp desc";
using (OleDbConnection cn = new OleDbConnection (ConnectionString)) { using (OleDbCommand cmd = new OleDbCommand (SqlString, cn)) {
return dt; } To cause the error, all I did was add the AND statement into the query. Now I get this .NET error message every time I try to run this program:
System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at System.Data.Common.UnsafeNativeMethods.ICommandWithParameters.SetParameterInfo(IntPtr cParams, IntPtr[] rgParamOrdinals, tagDBPARAMBINDINFO[] rgParamBindInfo) at System.Data.OleDb.OleDbCommand.ApplyParameterBindings(ICommandWithParameters commandWithParameters, tagDBPARAMBINDINFO[] bindInfo) at System.Data.OleDb.OleDbCommand.CreateAccessor() at System.Data.OleDb.OleDbCommand.InitializeCommand(CommandBehavior behavior, Boolean throwifnotsupported) at System.Data.OleDb.OleDbCommand.ExecuteCommand(CommandBehavior behavior, Object& executeResult) at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) at System.Data.OleDb.OleDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.OleDb.OleDbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
I am using SQL Server Compact Edition 3.5 and C# .NET 2.0. It's worth noting that the web service does this outside of the program as well, so I don't think the problem is in the code that calls it. Also worth noting is that the query itself works fine when I substitute values in and run it in .NET Server Explorer.
Why DataAdapter does NOT load relations from DB ?the relations are made using SQL SERVER MANAGEMENTbut when a fill a datatable using dataadapter the relations are not loaded .why ? what is the solution to this problem ?
Hi i'm a new to ASP.NET and for some reason when i click the Next button in the code below, the pageIndex does not change. Please assist, Basically what i'm trying to do is to use DataAdapter.fill but passing in the start index and the number of records to pull from the dataset table. using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.OleDb; public partial class Home : System.Web.UI.Page { //ConnectionOleDbConnection dbConn; //discount that can be change by user using a gui interface //CurrentPageint pageIndex = 0;double discount = 0.15 ; protected void Page_Load(object sender, EventArgs e) { // homeGridView.Visible = true;
BindList();
}protected string getSpecial(string price,object sale) {String special = "";if (sale.ToString().CompareTo("True") == 0) {special = String.Format("{0:C}",double.Parse(price) * (1-discount)); }return special; } protected void BindList() { //Creating an object for the 'PagedDataSource' for holding the data.
//PagedDataSource objPage = new PagedDataSource(); try { //open connection openConnection(); //sql commandstring columns = "*"; string SqlCommand = "Select " + columns + " from Books"; //create adapters and DataSetOleDbDataAdapter myAdapter = new OleDbDataAdapter(SqlCommand, dbConn);DataSet ds = new DataSet("bSet");
//create tableDataTable dt = new DataTable("Books");myAdapter.Fill(ds, pageIndex, 9, "Books");
Response.Write("Page Index: "+pageIndex); //create table data viewDataView dv = new DataView(ds.Tables["bTable"]); booksDataList.DataSource = ds; booksDataList.DataBind();
I have done some reading on the dataadapter class, but do not have a good handle on how to work with dataadapter after it has been filled by a dataset. For instance, should I use an if statement such as this to update the value in the dataadapter? if (dsSunbelt.Tables[0].Columns[39].Equals("")) { DataRow drUpdate = dsSunbelt.Tables[0].Columns[39].Equals(DateTime.Now); } I am sure it is not hard to see what I am doing, and I hope that I am missing something small, but how do I isolate a dataadapter value to update in the corresponding database?
Hi, I am populating a datagrid with data from one sql table, I add additional columns and then wish to write it back out to another table. I have written the following code to acheive this, however it keeps throwing the follwing exception - "Update requites a valid UpdateComman when passed a DataRow collection with modified rows" I've looked and I can see what the problem is, can anybody help please? Private Sub FillData() 'SQL connection Me.sqlconnection = New System.Data.SqlClient.SqlConnection Me.sqlconnection.ConnectionString = ConfigurationSettings.AppSettings("CuroConnection")
Dim sql As String If Request("action") = "gen" Then sql = "select item from tblPickList where GroupName = 'xxx'AND Category = '" & Category2 & "' ORDER BY item ASC" ElseIf Request("action") = "fav" Then sql = "select identifiertext as item from tblfavourites where HRID = " & Session("hrid") & " and type = 3 ORDER BY identifiertext ASC" ElseIf Request("action") = "spec" Then sql = "select item from tblPickList where GroupName = '" & GroupID & "' AND Category = '" & Category2 & "' ORDER BY item ASC" End If
ds = New DataSet da = New SqlClient.SqlDataAdapter(sql, sqlconnection)
Try sqlconnection.Open() da.Fill(ds, "tblPickListTemp") sqlconnection.Close() Catch ex As Exception sqlconnection.Close() End Try
ds.Tables(0).Columns.Add("HRID") ds.Tables(0).Columns.Add("Flag") 'may possibly add a favourites column here at a later date to ensure no duplication
Dim dr As DataRow For Each dr In ds.Tables("tblPickListTemp").Rows dr("HRID") = Session("hrid") dr("Flag") = 0 Next
DgrdFavourites.DataSource = ds DgrdFavourites.DataBind() End Sub
Public Sub CreateTempRecords()
'SQL connection Me.sqlconnection = New System.Data.SqlClient.SqlConnection Me.sqlcommand = New System.Data.SqlClient.SqlCommand Me.da = New SqlClient.SqlDataAdapter Me.sqlconnection.ConnectionString = ConfigurationSettings.AppSettings("CuroConnection")
Dim sql As String sql = "Insert into tblPickListTemp (Item, HRID, Flag) values (@Item, @HRID, @Flag)" sqlcommand.CommandText = sql sqlcommand.Connection = sqlconnection
sqlcommand.Parameters.Add("@Item", "Item") sqlcommand.Parameters.Add("@HRID", "HRID") sqlcommand.Parameters.Add("@Flag", "Flag") da.InsertCommand = sqlcommand da.Update(ds.Tables(0)) End Sub
this does not work, it does work however if i replace the Me.textboxhello.Text with a value in quotation marks or with another text box not linked to that feild in the table... it does not work with the relevant text box!!!!!!!!
Hy, again! I am at the begining of an application. I have some modules that insert, delete and update only one row at one table. My question is should I use dataadapter.Update() or ExecuteNonQuery(). I prefer ExecuteNonQuery because I want to build a class : DataLayer to implement my own InsertProcedure(), UpdateProcedure(),DeleteProcedure(). I want speed in my application, so which is the best: dataadapter.Update() OR ExecuteNonQuery(). Thank you!
Good day, I just like to ask if anybody has experienced getting empty rows from SQL data adapter? I'm using SQL Server 2005. Problem is when the sql is run on Query Analyzer it retrieves a number of rows but when used in my application it returns 0 or empty rows. I thought the connection is not the problem since I got my columns right. Below is my code snippet. Thanks! const string COMMAND_TEXT = @"select distinct somefield as matchcode, count(somefield) " + "as recordcount from filteredaccount where StateCode = 0 group by somefield having count(somefield) > 1"; SqlDataAdapter adapter = new SqlDataAdapter(COMMAND_TEXT, connection); DataTable dt = new DataTable(sometablename); adapter.Fill(dt);
I am having trouble getting an Update call to actually update records. The select statement is a stored procedure which is uses inner joins to link to property tables. The update, insert, and delete commands were generated by Visual Studio and only affect the primary table. So, to provide a simple example, I have a customer table with UID, Name, and LanguageID and a seperate table with LanguageID and LanguageDescription. The stored procedure can be used to populate a datagrid with all results (this works). The stored procedure also populates an edit page with one UID (this works). After the edit is completed, I attempt to update the dataset, which only has one row at this time, which shows that it has been modified. The Update modifies 0 rows and raises no exceptions. Is this because the update, insert, and delete statements do not match up one-to-one with the dataset? If so, what are my choices?
I'm using DataAdapter.Update() to update data in a table. My question is; how do I create a trigger that works after the update has completely finished?
For example if my update adds 50 new rows to a table the trigger I've currently got fires after each new row that is added ie 50 times in total. Is it possible to get it to trigger after the last (ie 50th) row is added???
hi friends, i look forward an answer that solves my problem. iam trying too populate a DropDown list . here is the codings. Previously it was working. suddenly, it s generating error. strConnectionString = "Provider = SQLOLEDB;Integrated Security=False; User ID=sa;Password=;Data Source=GIREESH-AC720F7;Initial Catalog=NorthWind"
in page_load event dim sql as string sql = "select AthleteNameKey from athletes" result_adap = DbAccess.ExecuteAdaP(sql) result_adap.Fill(result_ds, "athletes") cboAthleteName.DataSource = "athletes" cboAthleteName.DataTextField = "AthleteNameKey" cboAthleteName.DataValueField = "AthleteNameKey" cboAthleteName.DataBind()
Public Function ExecuteAdaP(ByVal sqls As String) As OleDbDataAdapter 'Dim ds As New OleDbDataAdapter Dim da As New OleDbDataAdapter(sqls, strConnectionString) 'da.Fill(ds) Return da End Function
I am trying to insert data into 2 different tables. I am using dataadapter and dataset.
Protected Sub SubmitButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles SubmitButton.Click Call ConnectionString()
Dim insertSQL As New SqlCommand() insertSQL.Connection = sqlConn insertSQL.CommandText = "SELECT location.CountryName, location.CityName, location.BuildingName, location.FloorID, rooms.name, rooms.FloorID AS Expr1 FROM location INNER JOIN floors ON location.FloorID = floors.id INNER JOIN rooms ON floors.id = rooms.FloorID"
Dim ds As New DataSet() Dim da As New SqlDataAdapter()
da.SelectCommand = insertSQL Dim scb As New SqlCommandBuilder(da)
Try da.Fill(ds) Dim ndr = ds.Tables("location").NewRow Dim ndr2 = ds.Tables("rooms").NewRow
I am reading multiple databases into a single dataset, putting each read into a new datatable in the set. Ultimately, I want to merge the multiple tables (they are all from different DB tables in different locations using the same schema). I am also combining this with data from an Oracle database which is in yet another table in the same dataset.
Here is my question:
I will not be propagating any changes to this data back to its original source, but I will be populating it out to Active Directory. (Don't worry; I'm not asking any AD questions here.) But I do want to run SELECT, DELETE, and UPDATE queries against the data in the dataset in memory without writing it out to a separate file. Based on that type of usage, would I be better to use a DataReader or a DataAdapter to do the read from the original database? If I use a DataReader, can I still update the data in memory? In either case, what's the correct methodology to update data in a dataset in memory?
My DataAdapter.Update() Method is running this query against my database and all the parameters and the formatting looks correct to me. I was wondering if anyone could identify obvious errors.... Thanks!
My task is to bind and show 3 different values coming from three different queries into three different columns of GridView. I had done this as mention in below. Program was successful. But I want to excute these three queries in same Stored Procedure. I can do that and stored in seperated variables. I need help how to call these three different values in data adapters and store each value in three different columns of grid view.
Simply I want to below statement in stored procedures and call from program. Can any one help me plz.
con = DataBaseConnection.GetConnection();
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter("select isnull(sum(PA_DAmt),0) from PA_Deposits where PA_UID = @PA_UID", con); da.SelectCommand.Parameters.Add("@PA_UID", SqlDbType.Int).Value = Convert.ToInt32(Session["PA_UID"]); da.Fill(ds,"Dep");
SqlDataAdapter da1 = new SqlDataAdapter("select isnull(sum(PA_EAmt),0) from PA_Expenses where PA_UID = @PA_UID", con); da1.SelectCommand.Parameters.Add("@PA_UID", SqlDbType.Int).Value = Convert.ToInt32(Session["PA_UID"]); da1.Fill(ds,"Exp");
SqlDataAdapter da2 = new SqlDataAdapter("select isnull(sum(PA_IAmt),0) from PA_Income where PA_UID = @PA_UID", con); da2.SelectCommand.Parameters.Add("@PA_UID", SqlDbType.Int).Value = Convert.ToInt32(Session["PA_UID"]); da2.Fill(ds,"Inc");
// This is another way I had tried. But failed. I am getting Index out of bound error. Can any solve this if possible to u. SqlCommand cmd = new SqlCommand("select isnull(sum(PA_DAmt),0) from PA_Deposits where PA_UID = @PA_UID", con); cmd.Parameters.Add("@PA_UID", SqlDbType.Int).Value = (int)Session["PA_UID"]; GridView1.Rows[0].Cells[1].Text = cmd.ExecuteScalar().ToString();
cmd.CommandText = "select isnull(sum(PA_EAmt),0) from PA_Expenses where PA_UID = @PA_UID"; GridView1.Rows[0].Cells[2].Text = cmd.ExecuteScalar().ToString();
cmd.CommandText = "select isnull(sum(PA_IAmt),0) from PA_Income where PA_UID = @PA_UID"; GridView1.Rows[0].Cells[3].Text = cmd.ExecuteScalar().ToString();
ASPX Code for Grid View <h2>Account Summary</h2><br />
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" emptydatatext="There are no data records to display." Width="238px" > <Columns> <asp:TemplateField >
hi, how can i fill dropdownlist through code not through visit.and i need to know which is fastest and easy way for web application throught this below query. cmd.Connection = conn conn.Open()Dim ds As New DataSet cmd.CommandText = "SELECT Emp_Name,Emp_ID FROM Employee " da.Fill(ds, "data") cmd.ExecuteNonQuery() conn.Close()
Currently we have tables (in sql 6,5), many of them do not have primary keys. While I was trying to re-index (re-org), many of them got an error: "fillfactor 204 is not a valid percentage; fillfactor must be between 1 and 100." (many tables' fillfactor exceed 100 or more...) How can I fix them so I can upgrade to sql 7 ? Thank you for your help.
I am really confused about this whole fill factor thing. The way I understand it, is if you have a table whose data remains pretty much static, you should use a higher fill factor. Suppose you had a database where you had at most 150 transactions a day that changed the data, should the fill factor be left at the default(0) or increased? How do you determine how much to increase it? Is there a rule of thumb that suggests if you have x number of changes against a table, you should have a fill factor between y and z percent?
Hi all, While creating indexes for a table, I specified a fill factor of 70%. I then inserted a few hundred rows into the table. Is it possible to check to what percent the pages are full after the rows have been inserted?
You have a db with 50,000 records and you want to add 100,000 more. What should the right fill factor be? Is there a way to "calculate" a fill factor if you don't want to use default? Any help is appreciated. Thank you.
I have a web online table that is inserted about 1500 record one day. Each night, a DST is running to pull all data to anther database. How to set fill factor on a one column index to get the best performance? Current fill factor is 80%.
