In this small code snippet, I will show how to perform two way sorting in
DataGrid using bound columns. Remember, there can be numerous ways you can sort the items in the
DataGrid and this is just one of them.
Adding Bound Columns:
First, add some columns in your
DataGrid using Property Builder. Since this is an intermediate level article, you should know how to perform this. Once you add the bound columns, give the
DataGrid a data source and populate it with some data.
Sorting DataGrid both ways:
Okay, up till now, the
DataGrid should be populated with some data. Now in the Properties window of the
AllowSorting = "
true". Okay, now sorting is enabled and all you need now is the actual code that sorts the
DataGrid Sorting Code:
Whenever the Columns header is clicked,
SortCommand event is fired. So, place the code below in the
SortCommand event handler:
private void Sort_DataGrid(object source,
SqlCommand myCommand = new SqlCommand("SELECT * FROM Categories",
myCommand.CommandType = CommandType.Text;
SqlDataAdapter myAdapter = new SqlDataAdapter(myCommand);
DataSet ds = new DataSet();
DataView dv = new DataView(ds.Tables["Categories"]);
if( (numberDiv%2) == 0 )
dv.Sort = e.SortExpression + " " + "ASC";
dv.Sort = e.SortExpression + " " + "DESC";
myDataGrid.DataSource = dv;
In the above code, "
numberDiv" is the
Int32 variable which keeps count of the even and odd number of mouse clicks on the header. The heart of this example is the
DataView object which has a
SortExpression property, it represents the name of the column clicked.
And lastly, just assign the
DataSource to the
DataView and bind the grid on the page.