Implement two-way DataGrid sorting in C #

Implementation of two-way sorting of DataGrid in C #-Linux general technology-Linux programming and kernel information. The following is a detailed description. In. net, the DataGrid supports sorting, but does not support bidirectional sorting. I used it and read some related posts. I tried a method and it worked, mainly using the DataGrid. attributes stores a parameter and modifies the SortExpression of the DataGridColumn in onSortCommand. the Code is as follows:

Private void BindData ()
{
DataTable dt = .......;
If (dt! = Null)
{
DataView dv = dt. DefaultView;
If (maid ["SortBy"]! = Null)
{
Dv. Sort = maid ["SortBy"];
}

DataGrid1.DataSource = dv;
DataGrid1.DataBind ();
}
}

Private void DataGridSort (object source, System. Web. UI. WebControls. DataGridSortCommandEventArgs e)
{
DataGrid1.Attributes ["SortBy"] = sortstr;
This. BindData ();

// Locate the sorted column and modify its sorting attribute

DataGridColumn clm = null;

For (int I = 0; I {
If (maid . SortExpression = e. SortExpression)
{
Clm = maid;
Break;
}
}

If (clm = null) return;

If (e. SortExpression. ToLower (). IndexOf ("desc")> 0)
{
Clm. SortExpression = e. SortExpression. ToLower (). Replace ("desc", "asc ");
}
Else
{
If (e. SortExpression. ToLower (). IndexOf ("asc")> 0)
{
Clm. SortExpression = e. SortExpression. ToLower (). Replace ("asc", "desc ");
}
Else
{
Clm. SortExpression = e. SortExpression. ToLower () + "desc ";
}
}
}