Command objects uses, purposes and their methods.

0 Answers  

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What DataReader class do in ADO.NET ?

0 Answers   NA,

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What is sql connection in ado.net?

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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Which method in OLEDBAdapter is used to populate dataset with records?

0 Answers  

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How to fetch the last inserted record in a particular table?

10 Answers   CarrizalSoft Technologies, Microsoft,

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Which is faster datareader or dataadapter?

0 Answers  

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Explain what are acid properties?

0 Answers  

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

0 Answers  

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Define Execute Reader?

0 Answers  

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How to retrieve the user id which is provided while windows authentication?

0 Answers   Cap Gemini,

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What are the advantages and drawbacks of using ado.net?

0 Answers  

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