What are the advantage of ado.net?

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What is the role of clr?

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Why do we serialize data?

0 Answers  

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Explain what is datagrid with an example?

0 Answers   C DAC, CDAC,

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What is Pooling? what is data pooling? what is sql pooling?

3 Answers   TCS,

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What is ole in excel?

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Which method is used by command class to execute SQL statements that return single value?

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What are the 4 types of classes in ADO.NET?

5 Answers  

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Define isolation?

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Can we do database operations without using any of the ado.net objects?

0 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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Explain why edit is not possible in repeater?

0 Answers  

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