Question

i have a databound GridView in asp.net 2.0 with a row-selection link. When a row is selected, I want to programmatically add a table row below the selected row, in order to nest another grid et al.

I am researching this for a client and for an article, and i think my google-fu is not strong tonight. Any suggestions?

EDIT: I actually had a working solution but Visual Studio was nutted up somehow; closing and re-opening VS and rebuilding everything fixed the problem 😉

My solution is posted below, please tell me how to make it better if possible. Thanks!

Answer 1

I think I figured it out. Here is a solution that seems to work. It could be improved using user controls but this is the gist of it:

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) {     if (e.Row.RowType == DataControlRowType.DataRow &&          (e.Row.RowState & DataControlRowState.Selected) > 0)     {         Table tbl = (Table)e.Row.Parent;         GridViewRow tr = new GridViewRow(e.Row.RowIndex + 1, -1,             DataControlRowType.EmptyDataRow, DataControlRowState.Normal);         TableCell tc = new TableCell();         tc.ColumnSpan = GridView1.Columns.Count;         tc.Controls.Add(             makeChildGrid(Convert.ToInt32(                 ((DataRowView)e.Row.DataItem)['ROW_ID_FIELD'])));         tr.Cells.Add(tc);         tbl.Rows.Add(tr);     } }  protected GridView makeChildGrid(int id) {     GridView gv = new GridView();     SqlDataSource sqlds = new SqlDataSource();     sqlds.DataSourceMode = SqlDataSourceMode.DataSet;     sqlds.ConnectionString = SqlDataSource1.ConnectionString;     sqlds.SelectCommand = 'SELECT * from MY_TABLE_NAME ' +         'WHERE KEY_FIELD = ' + id.ToString();     DataView dv = (DataView)sqlds.Select(DataSourceSelectArguments.Empty);     gv.DataSource = dv;     gv.DataBind();    //not sure this is necessary...?     return gv; }