What two types of data providers does ADO.NET supply? What determines which one you should use?

0 Answers   CDC,

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What is data reader in ado.net?

0 Answers  

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What is ado and dao?

0 Answers  

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What is the default Timeout for SqlCommand.CommandTimeout property?

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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Features and disadvantages of dataset?

2 Answers   CarrizalSoft Technologies, Infosys, Microsoft, Sampath Software,

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What are the different namespaces used in the project to connect the database? What data providers available in .net to connect to database?

0 Answers  

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What are the steps in connecting to database?

3 Answers   IBM, Microsoft,

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What are the core objects of ADO.NET?

0 Answers  

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What Is Difference Between Ado And Ado.net?

0 Answers   BirlaSoft,

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What are basic methods of dataadapter?

0 Answers  

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differences between ADO and ADO.NET

0 Answers   Microsoft,

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