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New Message on BDOTNET
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From: Kani
Message 1 in Discussion
We are creating a Datagrid in which the columns and rows will be created
dynamically. First the columns will be created dynamically using the
InstatiateIn method. Then using Add Row button, we are trying to add a row
dynamically using the same InstatiateIn method. PROBLEM : The problem is the
row is getting added dynamically but the fields values are not retained.
Viewstate is not working for the text fields which are there in the
ItemTemplate column of the grid.
Please go through the code and let us know the solution as early as possible :
The code is as given below:
=========================================================== public class
DataGridTemplate : ITemplate
{
ListItemType templateType;
string columnName; public DataGridTemplate(ListItemType type, string
colname)
{
templateType = type;
columnName = colname;
} public void InstantiateIn(System.Web.UI.Control container)
{
container.EnableViewState = true;
Literal lc = new Literal();
switch(templateType)
{
case ListItemType.Header:
lc.Text = " <BR><B>Engagement</B>";
container.Controls.Add(lc);
break;
case ListItemType.Item:
DropDownList ddl = new DropDownList();
container.Controls.Add(ddl);
ddl.ID = "ddlGrid" ;
break;
case ListItemType.EditItem:
TextBox tb = new TextBox();
tb.Text = "";
container.Controls.Add(tb);
break;
case ListItemType.Footer:
lc.Text = "<I>" + columnName + "</I>";
container.Controls.Add(lc);
break;
}
container.EnableViewState = true;
}
}
=================================================== private void LoadControls()
{
ButtonColumn btnc3 = new ButtonColumn();
btnc3.ButtonType = ButtonColumnType.PushButton;
btnc3.Text = "Delete";
btnc3.CommandName = "Delete";
DataGrid1.Columns.Add(btnc3);
DataGrid1.Columns[0].ItemStyle.HorizontalAlign = HorizontalAlign.Center;
TemplateColumn tc1 = new TemplateColumn();
tc1.HeaderTemplate = new DataGridTemplate(ListItemType.Header, "Column1");
tc1.ItemTemplate = new DataGridTemplate(ListItemType.Item, "Column1");
tc1.EditItemTemplate = new DataGridTemplate(ListItemType.EditItem,
"Column1");
tc1.FooterTemplate = new DataGridTemplate(ListItemType.Footer, "Column1");
DataGrid1.Columns.Add(tc1); DataGrid1.HeaderStyle.HorizontalAlign =
HorizontalAlign.Center ;
DataGrid1.Columns[1].ItemStyle.HorizontalAlign = HorizontalAlign.Center ;
DataGrid2.HeaderStyle.HorizontalAlign = HorizontalAlign.Center ;
for (int i=0;i<1;i++)
{
// create Template columns
string count = i.ToString();
TemplateColumn tcl = new TemplateColumn(); string ColumnName = "tcl" ;
ColumnName = ColumnName + count; tcl.HeaderTemplate = new
DataGridTemplate2(ListItemType.Header, ColumnName);
tcl.ItemTemplate = new DataGridTemplate2(ListItemType.Item, ColumnName);
tcl.EditItemTemplate = new DataGridTemplate2(ListItemType.EditItem,
ColumnName);
tcl.FooterTemplate = new DataGridTemplate2(ListItemType.Footer, ColumnName);
DataGrid2.Columns.Add(tcl); }
LoadGrid();
} ============================================================== private void
LoadGrid()
{
try
{
objDBUtil = new DBUtil.DBUtil("strDBConnString");
string strQuery = "select conId,conFname from Consultant";
ds = objDBUtil.GetDataSet(strQuery);
dt = ds.Tables[0];
//dg.DataSource = intItems;
DataGrid1.DataSource = ds;
DataGrid2.DataSource = ds;
Session["ds"] = ds;
DataGrid1.DataBind();
DataGrid2.DataBind();
}
catch(Exception exp)
{
string str = exp.Message;
}
}
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