Basics of Custom Controls and Namespaces (CS0103)

Question

User1858242605 posted

I am creating a custom control to display an image based on a database field. If field=1, show image1, if field=2, show image2, etc.

The following error appears..."CS0103: The name 'SetPercentageCompleteImage' does not exist in the current context". It seems to me that the default.aspx page cannot see the SetPercentageComplete function in PercentComplete.ascx.cs so I think it is namespace problem. I have tried to configure a namespace but this just generated more errors.

The key elements of the user control and default page are listed below:

PercentComplete.ascx 

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="PercentageCompleteImage.ascx.cs" Inherits="PercentageCompleteImage" %>

<asp:Image ID="Image1" runat="server" ImageUrl="~/0_Perc_Comp.png" OnLoad="SetPercentageCompleteImage" />

 

PercentComplete.ascx.cs  

using System;

using System.Collections;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

public partial class PercentageCompleteImage : System.Web.UI.UserControl

{

protected void Page_Load(object sender, EventArgs e)            {        }

public String PerCentValue

           { get ;  set ;  }public void SetPercentageCompleteImage(object sender, EventArgs e)

{

int x = Convert.ToInt32(PerCentValue);

switch (x) {

case 0: Image1.ImageUrl = "~/0_Perc_Comp.png"; return;

case 1: Image1.ImageUrl = "~/10_Perc_Comp.png"; return;

case 2: Image1.ImageUrl = "~/20_Perc_Comp.png"; return;

case 3: Image1.ImageUrl = "~/30_Perc_Comp.png"; return;

}  }  }

 

Elements of Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <%@ Register src="PercentageCompleteImage.ascx" tagprefix="uc1" tagname="PercentageCompleteImage" %>

<%@ Register assembly="Telerik.Web.UI" namespace="Telerik.Web.UI" tagprefix="telerik" %>   .....using this for the RADGrid with control in a template

....

 

The template where the problem occurs. 

<telerik:GridTemplateColumn CurrentFilterFunction="NoFilter" FilterListOptions="VaryByDataType" ForceExtractValue="None" UniqueName="column" HeaderText="Status">

    <EditItemTemplate>      <asp:TextBox runat="server"></asp:TextBox>    </EditItemTemplate>

    <ItemTemplate> <uc1:PercentageCompleteImage  ID="PercentageCompleteImage1" runat="server" PerCentValue='<%# SetPercentageCompleteImage(Eval("Status")) %>' />  </ItemTemplate>   .....this is the problem line (referencing the Status field which is a GridBoundColumn further up the page).

</telerik:GridTemplateColumn>

Thanks in advance

Brad