I have a ListBox
, on_button click, I want all the items in the ListBox
to be displayed as headers in the GridView
. Here is the code that i have tried :
protected void DONE4_Click(object sender, EventArgs e)
{
Panel7.Visible = true;
DataTable dt = new DataTable();
for (int i = 0; i < ListBox1.Items.Count; i++)
{
dt.Columns.Add(ListBox1.Items[i].ToString());
}
GridView2.DataSource = dt;
GridView2.DataBind();
foreach (GridViewRow grdRow in GridView2.Rows)
{
DropDownList bind_dropdownlist = new DropDownList(); // defining the property of the DropDownList as bind_dropdownlist
bind_dropdownlist = (DropDownList)(GridView2.Rows[grdRow.RowIndex].Cells[0].FindControl("Pro_List")); // finding the DropDownList from the gridiew for binding
SqlDataAdapter mydata = new SqlDataAdapter("SELECT DISTINCT Profile_Instance FROM Profile_Master", con);
DataSet dset = new DataSet(); // binding the DropDownList with the dataset ds
mydata.Fill(dset, "Table");
bind_dropdownlist.DataSource = dset;
bind_dropdownlist.DataTextField = "Profile_Instance"; // set the DropDownList's DataTextField as designation which display the designation in the dropdownlist after fetching the data from database
bind_dropdownlist.DataBind();
bind_dropdownlist.Items.Insert(0, new ListItem("---Choose Profile---", "-1"));
}
}
I want all the items in the ListBox
to be displayed as header field in a GridView
.
The code above gives no errors, but when run it does not work. Can anyone kindly help me with this?
Here is my Design code for the GridView
:
<asp:Panel ID="Panel7" runat="server">
<asp:GridView ID="GridView2" runat="server" CellPadding="4" ForeColor="#333333"
GridLines="None" style="text-align: center; font-size: small">
<Columns>
<asp:TemplateField HeaderText="">
<ItemTemplate>
<asp:DropDownList ID="Pro_List" runat="server">
<asp:ListItem>--Select--</asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</asp:Panel>
After setting the DataSource, Call the DataBind
method and see what happens
GridView2.DataSource = dt;
GridView2.DataBind();
EDIT : The below code works just fine. Tested.
If you do not have data in the Grid, It wont show anything even the headers unless you give an EmptyText field property value for the grid.
DataTable dt = new DataTable();
DataRow rw = default(DataRow);
for (int i = 0; i < ListBox1.Items.Count; i++)
{
dt.Columns.Add(ListBox1.Items[i].ToString(),
System.Type.GetType("System.String"));
}
//Simply adding 10 rows
//Replace this hard coded loop with your looping
// over your data to add rows.
for (int j = 0; j < 10; j++)
{
rw = dt.NewRow();
for (int i = 0; i < ListBox1.Items.Count; i++)
{
rw[ListBox1.Items[i].ToString()] = "Hello there";
}
dt.Rows.Add(rw);
}
GridView1.DataSource = dt;
GridView1.DataBind();
The working sample is available in this link .
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