what is data access layer?

2 Answers   Honeywell,

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What is sqldatasource?

0 Answers  

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Difference between DataReader and DataAdapter / DataSet and DataAdapter?

3 Answers   TCS,

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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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Is ado.net dead?

0 Answers  

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What happens when we issue Dataset.ReadXml command?

1 Answers  

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What is the executescalar method?

0 Answers  

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Explain the ADO . Net Architecture ( .Net Data Provider) ?

2 Answers  

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Define table relations?

0 Answers  

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Which is faster dataset or datareader?

0 Answers  

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Diff B/W DataSet vs DataTable

6 Answers   Star Wire,

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What is full form of ado?

0 Answers  

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