What does ADO.NET consists of ?

7 Answers   TCS,

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What is the difference between Command and CommandBuilder object?

0 Answers  

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How do you filter the data in datagrid?

2 Answers   Apps Lab, Choice Solutions,

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What does adodb stand for?

0 Answers  

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How do you connect to sql server database without using sqlclient?

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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How to add Primary key in DataSet

6 Answers  

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Advantage of ADO.Net?

2 Answers   QualSoft, TCS,

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Describe datareader object of ado.net with example.

0 Answers  

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Explain the difference between sqlcommand object and command behavior object?

0 Answers  

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What are different layers of ADO.Net?

0 Answers  

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Explain the difference in record set and dataset?

0 Answers  

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