What is execute scalar in ado.net?

0 Answers  

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What are the Data providers in ADO.Net?

0 Answers  

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what is clustered index?why is it created?

4 Answers   Microsoft, Wipro,

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Does ado.net use odbc?

0 Answers  

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What is the difference between oledbreader and datasetwhile connecting?

1 Answers  

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How To Update A Column In A DataGrid Using C#.NET? I am getting InvalidCastException as (Specified cast is not valid) while updating 2nd column in a datagrid? Id,firstname,lastname are the three columns of my datagrid respectively. I wanted to edit the second column(lastname) and update it. I did the following code in DataGrid's updatecommand(),but failed to update ! Int varid=(int)DataGrid1.DataKeys[e.Item.ItemIndex]; TextBox lnm=(TextBox)e.Item.Cells[2].Controls[0]; string str=lnm.Text ; SqlCommand cmd=new SqlCommand("update customer set lastname='" + str + "' where id=" + varid + "",con); cmd.ExecuteNonQuery(); DataGrid1.EditItemIndex=- 1; DataGrid1.DataBind();

2 Answers   Mind Tree, TCS,

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What is data control techniques?

0 Answers  

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What is the maximum pool size in ado.net connection string?

0 Answers  

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How to Read, Add, Update and Delete record in Entity Framework ?

0 Answers  

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What is data access pattern?

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Explain the different row versions available in table?

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Explain how to call the sql commands asynchronously in ado.net version 2.0?

0 Answers  

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