Give an example of a .net application which connects to microsoft access database using ado.net classes.

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In how many ways we can retrieve table records count? How to find the count of records in a dataset?

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Give an example that shows how to execute a stored procedure in ado.net?

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Which name space is used to get assembly details?

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What is the difference between ado.net and entity framework?

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How you will set the datarelation between two columns?

3 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 is Sql Native Client?

5 Answers   Gantec Solutions,

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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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What are the 4 types of classes in ADO.NET?

5 Answers  

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What is meant by entity framework?

1 Answers  

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What is the difference between sqldatareader and sqldataadapter?

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