Calling javascript from C#--help please

[Bishoy George]

// I wrote the following code but it is not working.
// Any help please?
// ------------------------------------------------
using System;
using System.Collecti ons;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.Sess ionState;
using System.Web.UI;
using System.Web.UI.W ebControls;
using System.Web.UI.H tmlControls;

namespace Testings
{
/// <summary>
/// Summary description for WebForm1.
/// </summary>
public class CallJavaScriptF romServerCode : System.Web.UI.P age
{
private void Page_Load(objec t sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "function RedIt() { ";
toRed += "document.bgCol or = \"red\"; } ";
toRed += "</script>";

if(!IsClientScr iptBlockRegiste red("bgColor"))
{
RegisterClientS criptBlock("bgC olor",toRed);
}
}

#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeCompo nent();
base.OnInit(e);
}

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeCompo nent()
{
this.Load += new System.EventHan dler(this.Page_ Load);

}
#endregion
}
}

[S. Justin Gengo]

Bishoy,

What calls your javascript function?

I don't see any code to fire it. Is it attached to a button click?

--
Sincerely,

S. Justin Gengo, MCP
Web Developer / Programmer

www.aboutfortunate.com

"Out of chaos comes order."
Nietzsche
"Bishoy George" <bi****@bishoy. com> wrote in message
news:uo******** ******@TK2MSFTN GP14.phx.gbl...

// I wrote the following code but it is not working.
// Any help please?
// ------------------------------------------------
using System;
using System.Collecti ons;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.Sess ionState;
using System.Web.UI;
using System.Web.UI.W ebControls;
using System.Web.UI.H tmlControls;

namespace Testings
{
/// <summary>
/// Summary description for WebForm1.
/// </summary>
public class CallJavaScriptF romServerCode : System.Web.UI.P age
{
private void Page_Load(objec t sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "function RedIt() { ";
toRed += "document.bgCol or = \"red\"; } ";
toRed += "</script>";

if(!IsClientScr iptBlockRegiste red("bgColor"))
{
RegisterClientS criptBlock("bgC olor",toRed);
}
}

#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeCompo nent();
base.OnInit(e);
}

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeCompo nent()
{
this.Load += new System.EventHan dler(this.Page_ Load);

}
#endregion
}
}

[Rob Schieber]

Bishoy George wrote:

// I wrote the following code but it is not working.
// Any help please?
// ------------------------------------------------
using System;
using System.Collecti ons;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.Sess ionState;
using System.Web.UI;
using System.Web.UI.W ebControls;
using System.Web.UI.H tmlControls;

namespace Testings
{
/// <summary>
/// Summary description for WebForm1.
/// </summary>
public class CallJavaScriptF romServerCode : System.Web.UI.P age
{
private void Page_Load(objec t sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "function RedIt() { ";
toRed += "document.bgCol or = \"red\"; } ";
toRed += "</script>";

if(!IsClientScr iptBlockRegiste red("bgColor"))
{
RegisterClientS criptBlock("bgC olor",toRed);
}
}

#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeCompo nent();
base.OnInit(e);
}

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeCompo nent()
{
this.Load += new System.EventHan dler(this.Page_ Load);

}
#endregion
}
}

What isn't working? is the script there when you view the source from
your asp page?

--
Rob Schieber

[Curt_C [MVP]]

is there anything on the page calling it?

--
Curt Christianson
site: http://www.darkfalz.com
blog: http://blog.darkfalz.com

"Bishoy George" wrote:

// I wrote the following code but it is not working.
// Any help please?
// ------------------------------------------------
using System;
using System.Collecti ons;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.Sess ionState;
using System.Web.UI;
using System.Web.UI.W ebControls;
using System.Web.UI.H tmlControls;

namespace Testings
{
/// <summary>
/// Summary description for WebForm1.
/// </summary>
public class CallJavaScriptF romServerCode : System.Web.UI.P age
{
private void Page_Load(objec t sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "function RedIt() { ";
toRed += "document.bgCol or = \"red\"; } ";
toRed += "</script>";

if(!IsClientScr iptBlockRegiste red("bgColor"))
{
RegisterClientS criptBlock("bgC olor",toRed);
}
}

#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeCompo nent();
base.OnInit(e);
}

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeCompo nent()
{
this.Load += new System.EventHan dler(this.Page_ Load);

}
#endregion
}
}

[Bishoy George]

// Here you are and still not working!!!
// -------------------------------------

using System;
using System.Collecti ons;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.Sess ionState;
using System.Web.UI;
using System.Web.UI.W ebControls;
using System.Web.UI.H tmlControls;

namespace Testings
{
public class CallJavaScriptF romServerCode : System.Web.UI.P age
{
protected System.Web.UI.W ebControls.Butt on Button1;

private void Page_Load(objec t sender, System.EventArg s e)
{
}

#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
InitializeCompo nent();
base.OnInit(e);
}
private void InitializeCompo nent()
{
this.Button1.Cl ick += new System.EventHan dler(this.Butto n1_Click);
this.Load += new System.EventHan dler(this.Page_ Load);

}
#endregion

private void Button1_Click(o bject sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "function RedIt() { ";
toRed += "document.bgCol or = \"red\"; } ";
toRed += "</script>";

if(!IsClientScr iptBlockRegiste red("bgColor"))
{
RegisterClientS criptBlock("bgC olor",toRed);
}
}
}
}

[Bishoy George]

// Although Page_Load is a trigerring event method.
// Here you are and still not working!!!
// -------------------------------------

using System;
using System.Collecti ons;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.Sess ionState;
using System.Web.UI;
using System.Web.UI.W ebControls;
using System.Web.UI.H tmlControls;

namespace Testings
{
public class CallJavaScriptF romServerCode : System.Web.UI.P age
{
protected System.Web.UI.W ebControls.Butt on Button1;

private void Page_Load(objec t sender, System.EventArg s e)
{
}

#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
InitializeCompo nent();
base.OnInit(e);
}
private void InitializeCompo nent()
{
this.Button1.Cl ick += new System.EventHan dler(this.Butto n1_Click);
this.Load += new System.EventHan dler(this.Page_ Load);

}
#endregion

private void Button1_Click(o bject sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "function RedIt() { ";
toRed += "document.bgCol or = \"red\"; } ";
toRed += "</script>";

if(!IsClientScr iptBlockRegiste red("bgColor"))
{
RegisterClientS criptBlock("bgC olor",toRed);
}
}
}
}

[Bruce Barker]

you seem confused. after you click the button, view source and you should
see the javascript function defined on the page. you still need some client
(javascript) code to call it. if you just wnat it to run then try inline
script:

string toRed = "<script language=\"java script\">docume nt.bgColor =
\"red\"; </script>";

-- bruce (sqlwork.com)
"Bishoy George" <bi****@bishoy. com> wrote in message
news:eJ******** ******@TK2MSFTN GP15.phx.gbl...

// Although Page_Load is a trigerring event method.
// Here you are and still not working!!!
// -------------------------------------

using System;
using System.Collecti ons;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.Sess ionState;
using System.Web.UI;
using System.Web.UI.W ebControls;
using System.Web.UI.H tmlControls;

namespace Testings
{
public class CallJavaScriptF romServerCode : System.Web.UI.P age
{
protected System.Web.UI.W ebControls.Butt on Button1;

private void Page_Load(objec t sender, System.EventArg s e)
{
}

#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
InitializeCompo nent();
base.OnInit(e);
}
private void InitializeCompo nent()
{
this.Button1.Cl ick += new System.EventHan dler(this.Butto n1_Click);
this.Load += new System.EventHan dler(this.Page_ Load);

}
#endregion

private void Button1_Click(o bject sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "function RedIt() { ";
toRed += "document.bgCol or = \"red\"; } ";
toRed += "</script>";

if(!IsClientScr iptBlockRegiste red("bgColor"))
{
RegisterClientS criptBlock("bgC olor",toRed);
}
}
}
}

[Sreejith Ram]

A little bit of reading on Client Side scripting with ASP may help

http://www.c-sharpcorner.com/Code/20...eScripting.asp

"Bishoy George" wrote:

// I wrote the following code but it is not working.
// Any help please?
// ------------------------------------------------
using System;
using System.Collecti ons;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.Sess ionState;
using System.Web.UI;
using System.Web.UI.W ebControls;
using System.Web.UI.H tmlControls;

namespace Testings
{
/// <summary>
/// Summary description for WebForm1.
/// </summary>
public class CallJavaScriptF romServerCode : System.Web.UI.P age
{
private void Page_Load(objec t sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "function RedIt() { ";
toRed += "document.bgCol or = \"red\"; } ";
toRed += "</script>";

if(!IsClientScr iptBlockRegiste red("bgColor"))
{
RegisterClientS criptBlock("bgC olor",toRed);
}
}

#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeCompo nent();
base.OnInit(e);
}

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeCompo nent()
{
this.Load += new System.EventHan dler(this.Page_ Load);

}
#endregion
}
}

[S. Justin Gengo]

Bishoy,

You're confused about how javascript works...

Javascript fires client side. What you've written is a piece of code that
places your javascript on the browser of the client machine in the web page,
but you are not telling the client to run the code.

There are two ways to do this. One way requires a post back to the server
which is what you originally attempted. Here's how that would have to change
to work:

private void Button1_Click(o bject sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "document.bgCol or = \"red\"; } ";
toRed += "</script>";

RegisterStartup Script("bgColor ",toRed);
}

But if you have to post back to the server in order to then fire your
javascript it's silly to use javascript at all; since you can just change
the background color via server side code. so here is what you probably
intended to do (Note that I've added a "return false" line to your original
javascript method and moved it to the page load):

namespace Testings
{
public class CallJavaScriptF romServerCode : System.Web.UI.P age
{
protected System.Web.UI.W ebControls.Butt on Button1;

private void Page_Load(objec t sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "function RedIt() { ";
toRed += "document.bgCol or = \"red\";
toRed += "return false;} ";
toRed += "</script>";

if(!IsClientScr iptBlockRegiste red("bgColor"))
{
RegisterClientS criptBlock("bgC olor",toRed);
}

//attach a javascript to your button that calls the RedIt method on the
client.
this.Button1.At tributes.Add("o nclick", "javascript:Red It();");

}

#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
InitializeCompo nent();
base.OnInit(e);
}
private void InitializeCompo nent()
{
this.Button1.Cl ick += new System.EventHan dler(this.Butto n1_Click);
this.Load += new System.EventHan dler(this.Page_ Load);

}
#endregion

You don't even need the button click's event handler because the client
won't post back.
--
Sincerely,

S. Justin Gengo, MCP
Web Developer / Programmer

www.aboutfortunate.com

"Out of chaos comes order."
Nietzsche
"Bishoy George" <bi****@bishoy. com> wrote in message
news:eJ******** ******@TK2MSFTN GP15.phx.gbl...

// Although Page_Load is a trigerring event method.
// Here you are and still not working!!!
// -------------------------------------

[Sreejith Ram]

try changing the script like below and if that is the result you are looking
for, please read through
http://www.c-sharpcorner.com/Code/20...eScripting.asp

private void Button1_Click(o bject sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "document.bgCol or = \"red\";";
toRed += "</script>";

if(!IsClientScr iptBlockRegiste red("bgColor"))
{
RegisterStartup Script("bgColor ",toRed);
}
}
}
"Bishoy George" wrote:

// Although Page_Load is a trigerring event method.
// Here you are and still not working!!!
// -------------------------------------

using System;
using System.Collecti ons;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.Sess ionState;
using System.Web.UI;
using System.Web.UI.W ebControls;
using System.Web.UI.H tmlControls;

namespace Testings
{
public class CallJavaScriptF romServerCode : System.Web.UI.P age
{
protected System.Web.UI.W ebControls.Butt on Button1;

private void Page_Load(objec t sender, System.EventArg s e)
{
}

#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
InitializeCompo nent();
base.OnInit(e);
}
private void InitializeCompo nent()
{
this.Button1.Cl ick += new System.EventHan dler(this.Butto n1_Click);
this.Load += new System.EventHan dler(this.Page_ Load);

}
#endregion

private void Button1_Click(o bject sender, System.EventArg s e)
{
string toRed = "<script language=\"java script\"> ";
toRed += "function RedIt() { ";
toRed += "document.bgCol or = \"red\"; } ";
toRed += "</script>";

if(!IsClientScr iptBlockRegiste red("bgColor"))
{
RegisterClientS criptBlock("bgC olor",toRed);
}
}
}
}