Does anyone know if its possible to pass parameters or the values of Request.QueryString from a web page to a custom control class? I'm using a C# Web Application. For Example I have Web Page1 which has to parameters passed to it from another Web page
Parameter # 1 name dbid and Parameter # 2 name reportid.
I know that I can access the values of the parameters from the code behind .aspx.cs using Request.QueryString so
Request.QueryString["dbid"],
Request.QueryString["reportid"]
but what I want to so is to generate dynamic HTML based upon the values of the Request.QueryString parameters. I can create a custom control (example below) and hard code in some values for the parameters , call another method and produce the HTML I want but I don't know how to pass the values of the parameters
to the class containing the override version of the Render method. The reason for why I'm trying to pass the parameters is that I have information held in a table that depending on the values of the parameters will then determine the content of the HTML to display.
Can anyone comment on if this is even the right approach or am I going in the worng direction all together.
Here is an example.
Here is my HTML code - note the reference to the custom control via the <Custom> tag.
<%@ Register TagPrefix="Custom" Namespace="ReportUIClassLibrary" Assembly = "ReportUIClassLibrary" %>
<%@ Page language="c#" Codebehind="DynamicTest.aspx.cs" AutoEventWireup="false" Inherits="ReportUI.DynamicTest" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>DynamicTest</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<Custom:WebCustomControl1 Runat="Server" Text="Test" Id="WC1" />
<asp:Label id="Label1" style="Z-INDEX: 101; LEFT: 312px; POSITION: absolute; TOP: 104px" runat="server">Label</asp:Label>
</form>
</body>
</HTML>
Here is the class containing the code for the custom control and the override of the Render method. Note here I am just calling another method GeneratePrompts that returns a string containing the HTML I want displayed. This method takes two parameters , I want the parameters to be the contents of my Request.QueryString variables, but this is
where I get stuck and I am hard coding in some values just to see if the method call will work.
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
namespace ReportUIClassLibrary
{
/// <summary>
/// Summary description for CustomControls.
/// </summary>
[DefaultProperty("Text"),
ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")]
public class WebCustomControl1 : System.Web.UI.WebControls.WebControl
{
private string text;
[Bindable(true),
Category("Appearance"),
DefaultValue("")]
public string Text
{
get
{
return text;
}
set
{
text = value;
}
}
protected override void Render(HtmlTextWriter output)
{
Text = ReportUIClassLibrary.BizObjects.GeneratePrompts("1 ","3");
output.Write(Text);
}
}
}
C# passing parameters to custom control class
