Using attributes in custom control

rodmcleay · June 3rd, 2004, 03:00 AM

I have a control that I have created to display the details of a customer.
I intend the control to display differently based on a "DisplayMode" attribute set for the control.
I am using this conrol from within a datagrid three times.
Only one will **************** at once depending on whether the datagrid is in the item, edit or footer template.
The problem is the code to effect the display mode does not get executed.(setDisplay();).
I know the other code in the item pageload event is executes because the control correctly sets the sutomer name in the literal control.

Can anyone see what I am doing wrong here?

Another interesting thing is that if I try to set the Literal control value in the code behind it does not work
eg. LTCompanyName.Text = this.Attributes["CompanyName"];
But setting a variable to this value and then binding the variable to the control as I have done below does work.

Any help / suggestions would greatly appreciated.

The code for the datagrid column is:

Code:

        <asp:TemplateColumn SortExpression="CompanyName ASC" HeaderText="Company">
            <ItemStyle VerticalAlign="Top" HorizontalAlign="Left"></ItemStyle>
            <ItemTemplate>
                <uc1:Customer id="CustomerItem" DisplayMode="0" CompanyName='<%# DataBinder.Eval(Container.DataItem,"CompanyName")%>' CustomerID='<%# DataBinder.Eval(Container.DataItem,"CustomerID")%>' runat="server"/>
            </ItemTemplate>
            <EditItemTemplate>
                <uc1:Customer id="CustomerEdit" DisplayMode="1" CompanyName='<%# DataBinder.Eval(Container.DataItem,"CompanyName")%>' CustomerID='<%# DataBinder.Eval(Container.DataItem,"CustomerID")%>' runat="server"/>
            </EditItemTemplate>
            <FooterTemplate>
                <uc1:Customer id="CustomerAdd" DisplayMode="2" CompanyName='<%# DataBinder.Eval(Container.DataItem,"CompanyName")%>' CustomerID='<%# DataBinder.Eval(Container.DataItem,"CustomerID")%>' runat="server"/>
            </FooterTemplate>
        </asp:TemplateColumn>

The html code for the control is

Code:

<table cellpadding="0" cellspacing="0" border="0">
    <tr>
        <td class='DGItemMainInfo'>
            <asp:Literal id="LTCompanyName" text='<%# CompanyName%>' runat="server">
            </asp:Literal>

        </td>
    </tr>
    <tr>
        <td>
            <div id='CustomerID_<%# CustomerID%>'  style="visibility:hidden;display:none">
                <asp:Panel id="PNLItem" runat="server">Item Panel</asp:Panel>
            </div>
            <asp:Panel id="PNLEdit" runat="server">Edit Panel</asp:Panel>
            <asp:Panel id="PNLAdd" runat="server">Add Panel</asp:Panel>
        </td>
    </tr>
</table>

And the code behind is:

Code:

        private void Page_Load(object sender, System.EventArgs e)
        {
            // Put code to initialize the page here
            CompanyName = this.Attributes["CompanyName"];
            CustomerID = this.Attributes["CustomerID"];
            displayMode = (DisplayMode) int.Parse(this.Attributes["DisplayMode"]);
            setDisplay();
        }

        private void setDisplay()
        {
            PNLItem.Visible = false;
            PNLEdit.Visible = false;
            PNLAdd.Visible = false;

            switch(displayMode)
            {
                case DisplayMode.Item:
                    PNLItem.Visible = true;
                    break;
                case DisplayMode.Edit:
                    PNLEdit.Visible = true;
                    break;
                case DisplayMode.Add:
                    PNLAdd.Visible = true;
                    break;
            }
        }

======================================
They say, best men are moulded out of faults,
And, for the most, become much more the better
For being a little bad.
======================================

rodmcleay · June 3rd, 2004, 03:37 AM

MORE INFO:

It appears that the code to assign the attribute to the variable also does not work.
It appears that the form is binding directly to the attribute so none of the code behind is being executed.

This narrows down my wuestion to:

How do I get the code behind of a user control to execute in a datagrid.

Thanks again in advance.

======================================
They say, best men are moulded out of faults,
And, for the most, become much more the better
For being a little bad.
======================================

rodmcleay · June 7th, 2004, 09:29 PM

I was able to assign the attributes via the oncreated event of the datagrid lines by refereing to the control and accessing its properties.
This resolved my situation however I was still not able to predictively use the page load event of the user control.
I think this is related to the when the various controls are created given the various templates of the datagrid.

======================================
They say, best men are moulded out of faults,
And, for the most, become much more the better
For being a little bad.
======================================