What are the different row versions available?

3 Answers  

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What is meant by ‘transaction’ in a database and what are the ‘properties of transaction’?

0 Answers  

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What are ado.net objects?

0 Answers  

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what is data Adapter?

26 Answers   CMC, CSS, IBM,

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Explain how do you connect to sql server database without using sqlclient?

0 Answers  

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What is ado.net object model?

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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What is difference between ado and other data object?

0 Answers  

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What are dataproviders?

0 Answers  

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Difference between DataReader and DataAdapter / DataSet and DataAdapter?

3 Answers   TCS,

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Explain the DataAdapter.Update() and DataSetAcceptChanges() methods.

0 Answers  

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What is ado.net connection?

0 Answers  

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