WHAT Are the major major compnents of a data provider in ADO.net.

14 Answers   Infosys, Wipro,

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What is the key feature of ADO.NET compared to ADO ?

3 Answers   TCS,

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How do we invoke queries from the application

2 Answers  

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What is the difference between sqldatareader and sqldataadapter?

0 Answers  

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How do you merge 2 datasets into the third dataset in a simple manner?

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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What are all the classes that are available in System.Data Namespace?

0 Answers  

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What is ado object model?

0 Answers  

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What is the provider being used to access oracle database?

0 Answers  

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Can I use One Data Set for More than one Data Adapter?

6 Answers  

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What is the difference between Data adaptor and Data set?

0 Answers   HCL,

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Execute nonquery returns no. of afected rows.So if my stored procedure hav lot of select stmnt, delete stmnt, insert stmnt..then what does execute nonquery returns in this case?

6 Answers   Wipro,

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