select item in dropdownlist & display in datalist

[Chrissy Callen]

Hi there...im writing a program where basically a user should select his/her name from a dropdownlist and then all details pertaining to that particular user are displayed in the datalist. At the moment the datalist is displays records for all users. How do i bind the records in the datalist to the selected item in the dropdownlist? Any help much appreciated - Thanks :) Chrissy Callen

[Mike Ellison]

Hi there. You could create an event handler for the OnSelectedIndexChanged that re-binds the grid using the SelectedValue of the dropdownlist. Also - make sure the dropdownlist has its AutoPostBack property set to true. Something like this maybe:

<asp:DropDownList id="myDD" runat="server"
AutoPostBack="true"
OnSelectedIndexChanged="myDD_SelectedIndexChanged">
... items ...
</asp:DropDownList>

<asp:DataGrid id="myGrid" runat="server">
... stuff ...
</asp:DataGrid>

<script runat="server">
private void myDD_SelectedValueChanged(object sender,
EventArgs e)
{
// get the drop down selected value
string sValue = myDD.SelectedValue;

// now re-execute whatever code was
// binding the grid, applying sValue
// as criteria
BindMyGrid(sValue);

}

private BindMyGrid(string sValue)
{
// if the passed in value is null, bind all data
if (sValue == null)
// ... bind all data
else
// ... only bind the one record based on sValue
}

</script>