What is ADO .NET and what is difference between ADO and ADO.NET?

7 Answers   Ksb,

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What is linq and entity framework?

0 Answers  

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How to store data in memory?

0 Answers  

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How to read data with the sqldatareader ?

0 Answers  

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What are all the commands used with Data Adapter?

0 Answers  

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What is Dataset Object?

0 Answers  

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What is reference by value how does it works in .net?

2 Answers   SQL Star,

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how do u connect ado.net to sql server

1 Answers   Microsystems,

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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 sqlconnection object?

0 Answers  

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how we can fire event in databound coulm in datagfrid withot using button?

0 Answers   Tech Mahindra,

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What are the two fundamental objects in ADO.NET?

6 Answers  

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