What is the namespace in which .NET has the data functionality classes?

5 Answers   eMantras,

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What is the provider and namespaces being used to access oracle database?

4 Answers   Microsoft,

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Does ado.net use odbc?

0 Answers  

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What is two way data binding android?

0 Answers  

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How to aggregating data across related tables?

0 Answers  

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What is difference between entity framework and ado.net?

0 Answers  

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Explain the architecture of ado.net?

0 Answers  

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Which is better entity framework or ado.net?

0 Answers  

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What is the executescalar method?

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 how to copy the contents from one table to another table and how to delete the source table in ado.net?

0 Answers  

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What is ado control?

0 Answers  

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