c# - Convert SqlDataSource to DataTable and DataView

Question

I have the following SqlDataSource and I want to convert it to DataView and read a column from it:

SELECT     
    dbo.Divisions.DivisionShortcut, 
    COUNT(DISTINCT dbo.UserQuiz.Username) AS [Number of Participants]
FROM         
    dbo.Divisions 
INNER JOIN
    dbo.employee ON dbo.Divisions.SapCode = dbo.employee.DivisionCode 
INNER JOIN
    dbo.UserQuiz ON dbo.employee.Username = dbo.UserQuiz.Username 
INNER JOIN
    dbo.Quiz ON dbo.UserQuiz.QuizID = dbo.Quiz.QuizID
WHERE     
    (dbo.Quiz.QuizID = @QuizID)
GROUP BY 
    dbo.Divisions.DivisionShortcut

This SqlDataSource lets the user enter the number of the Quiz, and it will retrieve the total number of participants in that quiz. I want to convert this SqlDataSource to a DataTable and read a column from it.

So how to do that?

Answer 1

Let me say you have an SqlDataSource named as SqlDataSource1

DataSourceSelectArguments args = new DataSourceSelectArguments();
DataView view = (DataView)SqlDataSource1.Select(args);
DataTable dt = view.ToTable();

Now you can read a column easily from this dt(DataTable) e.g.

int columnNumber = 0;
for(int i=0;i<dt.Rows.Count;i++)
{
    MessageBox.Show(dt.Rows[i][columnNumber].ToString());
}

Reference