Loop through all the rows of a GridView

One simple way to loop through all the rows in all the pages of a GridView is to access its DataSource. In this example, we will loop through the SQLDataSource to retrieve all the rows in a GridView and access its cell value. You can modify the logic depending on the type of controls you have added to the GridView


protected void btnLoop_Click(object sender, EventArgs e)
DataSourceSelectArguments dsaArgs = new DataSourceSelectArguments();
DataView view = (DataView)SqlDataSource1.Select(dsaArgs);
DataTable dt = view.ToTable();
for (int i = 0; i < dt.Rows.Count; i++)
for (int j = 0; j < dt.Columns.Count; j++)
string s = dt.Rows[i][j].ToString();


Protected Sub btnLoop_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim dsaArgs As New DataSourceSelectArguments()
Dim view As DataView = CType(SqlDataSource1.Select(dsaArgs), DataView)
Dim dt As DataTable = view.ToTable()
For i As Integer = 0 To dt.Rows.Count - 1
For j As Integer = 0 To dt.Columns.Count - 1
Dim s As String = dt.Rows(i)(j).ToString()
Next j
Next i
End Sub
Note: If you loop through the GridView instead of the DataSource, you will loop through the rows only for 'that current page'

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About The Author

Suprotim Agarwal
Suprotim Agarwal, ASP.NET Architecture MVP (Microsoft Most Valuable Professional) works as an Architect Consultant and provides consultancy on how to design and develop Web applications.

Suprotim is also the founder and primary contributor to DevCurry, DotNetCurry and SQLServerCurry. He is the Editor of a Developer Magazine called DNC Magazine. He has also written two EBooks 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook

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1 comment:

Rational Rogue said...

I have three GridViews with paging enabled. I need to automatically loop through all pages of each table at a set time interval without user interaction. Can you expand on the post above so I might implement it in my solution.