What does executequery return?

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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Explain what is datagrid with an example?

0 Answers   C DAC, CDAC,

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What are the two fundamental objects in ADO.NET?

6 Answers  

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What providers does ado.net uses internally ?

3 Answers   Digital GlobalSoft,

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What are the three Ado objects?

6 Answers   Microsoft, StarSoft,

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Name which operations can you not perform on an ado.net dataset?

0 Answers  

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Explain About ado.net components/objects. Usage of data adapters and tell the steps to retrieve data.

0 Answers  

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What are advantages of microsoft-provided data provider classes in ado.net?

0 Answers  

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What is the main difference between ADO and ADO.Net

4 Answers   HCL,

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Describe briefly an ADO.NET Dataset ?

0 Answers   Siebel,

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What are the rules to implement connection pooling?

0 Answers  

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