SQLDataSource And Timestamp

Apr 29, 2008

Hi folks,
I am binding a gridview to a SQLDataSource that contains a timestamp column. My SQLDatasource contains an update method (via a stored procedure) that takes all of the data fields from the grid as input parameters.  I am getting an error stating 'sql_variant is incompatible with timestamp' . 
The parameter definition for the update method specifies the timestamp column as type 'Object'. 
        <UpdateParameters> 
            <asp:Parameter Name="timestamp" Type="Object" />
            ...
        </UpdateParameters>
 
When the data is initially retrieved, the timestamp column is converted to a System.Byte[] however I cannot specify System.Byte[] in the parameter definition (different error)
 I have read other post with this issue but none seemed to have been solved (while still using SQLDataSource and binding).I have tried other datatypes and they do not work as well.
 Any help would be greatly appreciated
Thanks
Tom
 
 
 

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Timestamp Concurrency Control With SQLDataSource

Nov 10, 2005

I am trying to use a 'timestamp' type column with SQLDataSource for concurrency control with SQL Server.  I'm getting the following error:
Operand type clash: timestamp is incompatible with sql_variant
It appears that the problem is that the value for the Type property of the Parameter (which was generated by the SqlDataSource wizard) is Object which maps to 'sql_variant' rather than to 'timestamp'.
I know that the older way of doing things with SqlDataAdapter, SqlCommand, SqlParameter can handle timestamps because SqlParameter has a SqlDbType property that can have a value of SqlDbType.Timestamp, but I don't see how to do this with the newer SqlDataSource, Parameter classes because the Parameter.Type property (of type TypeCode) doesn't have a Timestamp value.
Has anyone been able to use a 'timestamp' type field with SqlDataSource?
Here's my sample code:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="MyTestPage.aspx.cs" Inherits="MyTestPage" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"><title>Untitled Page</title></head><body><form id="form1" runat="server"><div><asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1"EmptyDataText="There are no data records to display." DataKeyNames="MyID"><Columns><asp:CommandField ShowEditButton="True" /><asp:BoundField DataField="MyID" HeaderText="MyID" InsertVisible="False" ReadOnly="True"SortExpression="MyID" /><asp:BoundField DataField="MyDesc" HeaderText="MyDesc" SortExpression="MyDesc" /></Columns></asp:GridView><asp:SqlDataSource ID="SqlDataSource1" runat="server" ConflictDetection="CompareAllValues"ConnectionString="<%$ ConnectionStrings:CtrlConnectionString1 %>" DeleteCommand="DELETE FROM [MyTest] WHERE [MyID] = @original_MyID AND [MyDesc] = @original_MyDesc AND [timestamp] = @original_timestamp"InsertCommand="INSERT INTO [MyTest] ([MyDesc], [timestamp]) VALUES (@MyDesc, @timestamp)" OldValuesParameterFormatString="original_{0}"ProviderName="<%$ ConnectionStrings:CtrlConnectionString1.ProviderName %>" SelectCommand="SELECT [MyID], [MyDesc], [timestamp] FROM [MyTest]"UpdateCommand="UPDATE [MyTest] SET [MyDesc] = @MyDesc WHERE [MyID] = @original_MyID AND [MyDesc] = @original_MyDesc AND [timestamp] = @original_timestamp"><DeleteParameters><asp:Parameter Name="original_MyID" Type="Int32" /><asp:Parameter Name="original_MyDesc" Type="String" /><asp:Parameter Name="original_timestamp" Type="Object" /></DeleteParameters><UpdateParameters><asp:Parameter Name="MyDesc" Type="String" /><asp:Parameter Name="timestamp" Type="Object" /><asp:Parameter Name="original_MyID" Type="Int32" /><asp:Parameter Name="original_MyDesc" Type="String" /><asp:Parameter Name="original_timestamp" Type="Object" /></UpdateParameters><InsertParameters><asp:Parameter Name="MyDesc" Type="String" /><asp:Parameter Name="timestamp" Type="Object" /></InsertParameters></asp:SqlDataSource></div></form></body></html>

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I am populating oracle source in Sql Server Destination. after few rows it fails it displays this error:

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I used this script component using the following code in between the adapters, However after 9,500 rows it failed again giving the same above error:








To convert Oracle timestamp to Sql Server timestamp

If Row.CALCULATEDETADATECUST_IsNull = False Then

If IsDate(DateSerial(Row.CALCULATEDETADATECUST.Year, Row.CALCULATEDETADATECUST.Month, Row.CALCULATEDETADATECUST.Day)) Then

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Jun 23, 2015

date        time         s-sitename TimeTaken(Seconds)
6/8/2015 10:56:26 TestSite 100
6/8/2015 10:56:26 TestSite 500
6/8/2015 10:56:26 TestSite 800
6/9/2015 11:56:26 TestSite 700
6/9/2015 11:56:26 TestSite 200
6/12/2015 12:56:26 TestSite 700

I have a table with above values, I am looking for a sql query to find AvgTimeTaken at different time stamps and total count of each time stamp

Output
date        time         s-sitename TimeTaken(Seconds) Count_of_Request
6/8/2015 10:56:26 TestSite 1400                  3
6/9/2015 11:56:26 TestSite 900                   2
6/12/2015 12:56:26 TestSite 700                   1

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/****** Object: Table [dbo].[T1] Script Date: 12/7/99 10:45:49 AM ******/
if exists (select * from sysobjects where id = object_id(N'[dbo].[T1]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
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GO

/****** Object: Table [dbo].[T1] Script Date: 12/7/99 10:45:51 AM ******/
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go
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go

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(1 row(s) affected)


(1 row(s) affected)


(1 row(s) affected)


---------------------------
1900-01-01 06:51:00
1900-01-01 06:52:00
1900-01-01 06:53:00

(3 row(s) affected)


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Please help...

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