Explian About DataAdapters

0 Answers   BirlaSoft,

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

0 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 is the meaning of executenonquery?

0 Answers  

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What is the difference between OLEDB Provider and SqlClient?

0 Answers  

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How do you sort the data in datagrid?

4 Answers   Choice Solutions,

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What is difference between ado.net and asp 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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What is linq and entity framework?

0 Answers  

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can we change the data in dataset? if yes what is the process?

1 Answers   Artech,

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Is ado.net dead?

0 Answers  

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What are the Features and disadvantages of dataset

0 Answers   Microsoft,

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