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9/26/2005 2:39:21 AM

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5 Items, 1 Pages 1 |< << Go >> >|

	ThirstyMind
	Asp.Net User

Click event of a derived server control

9/26/2005 2:39:21 AM

0/0

I am working VS2003 and C#. I have inherited from ImageButton control and implemented new methods such as MouseOverUrl. When I put this new control, while the MouseOverUrl is working fine, the click event of this control doesn't work. Please help

Thanks

ThirstyMind

	joteke
	Asp.Net User

Re: Click event of a derived server control

9/26/2005 5:58:30 PM

0/0

Show the code, what you have implemented? Have you overridden something?

Thanks,

Teemu Keiski
Finland, EU

	ThirstyMind
	Asp.Net User

Re: Click event of a derived server control

9/26/2005 11:17:01 PM

0/0

Hi,

The following is the complete code on the inherited imagebutton called MyTestButtons:

using System;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.ComponentModel;

namespace MyTestButtons

{

[DefaultProperty("Text"),

ToolboxData("<{0}:MyTestButton runat=server></{0}:MyTestButton>")]

public class MyTestButton : System.Web.UI.WebControls.ImageButton

{

private string text;

private string _strMouseOverImageURL;

private string _strMouseOutImageURL;

[Bindable(true),

Category("Appearance"),

DefaultValue("")]

public string Text

{

get

{

return text;

}

set

{

text = value;

}

[

Bindable(false),

Browsable(true),

Category("Appearance")

]

public string MouseOverImageURL

{

get

{

return _strMouseOverImageURL;

}

set

{

_strMouseOverImageURL = value;

MouseOverImageURLFromViewState=_strMouseOverImageURL;

}

protected string MouseOverImageURLFromViewState

{

get

{

return (string) ViewState["MouseOverImageURLFromViewState"];

}

set

{

ViewState["MouseOverImageURLFromViewState"] = value;

}

[

Bindable(false),

Browsable(true),

Category("Appearance")

]

public string MouseOutImageURL

{

get

{

return _strMouseOutImageURL;

}

set

{

_strMouseOutImageURL = value;

MouseOutImageURLFromViewState=_strMouseOutImageURL;

}

protected string MouseOutImageURLFromViewState

{

get

{

return (string) ViewState["MouseOutImageURLFromViewState"];

}

set

{

ViewState["MouseOutImageURLFromViewState"] = value;

}

protected override void OnPreRender(EventArgs e)

{

this.Attributes.Add("OnMouseOver", "this.src='"+ MouseOverImageURLFromViewState +"';");

this.Attributes.Add("OnMouseOut", "this.src='"+ MouseOutImageURLFromViewState +"';");

if(Enabled)

{

this.Visible=true;

}

else

{

this.Visible=false;

}

}

The following is the code on the aspx page were I put the control:

.
.
.

private void InitializeComponent()

{

this.MyTestButton.Click += new System.Web.UI.ImageClickEventHandler(this.MyTestButton_Click);

this.Load += new System.EventHandler(this.Page_Load);

}

private void ImageButton1_Click(object sender, System.Web.UI.ImageClickEventArgs e)

{

TextBox1.Text = "Hello";

}

If the Click event of the control works fine, then the TextBox1 should display the word "Hello". But it doesn't happen. In the debug mode, the cursor doesn't even go to the ImageButton1_Click method. My advance thanks for your help!

	joteke
	Asp.Net User

Re: Click event of a derived server control

9/27/2005 2:42:03 PM

0/0

You need to call base.OnPreRender(e); in your overridden OnPreRender method. If you don't, the control is not registered for postback data processing and won't raise events (as it doesn't load postback data either)

Thanks,

Teemu Keiski
Finland, EU

	ThirstyMind
	Asp.Net User

Re: Click event of a derived server control

9/27/2005 11:33:00 PM

0/0

Thank you soooooo much! It worked!! Also thanks for the explanation why it didn't work in the first place.

5 Items, 1 Pages 1 |< << Go >> >|

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