WebPart event problem.

Question

Hi everyone.

I have this code:

protected override void CreateChildControls()

{

first = new LinkButton();

first.Text = "blabla";

first.Click += new EventHandler(first_Click);

this.Controls.Add(first);

}

void first_Click(object sender, EventArgs e)

{

//doing something....

}

Problem is, if i hit a link nothing is happen, i trying set brakepoint to first_click event, but program never jump to this part of code.

Where is the problem?

Answer 1

Lukas,

Your code needs some modification

protected override void CreateChildControls()

{

first = new LinkButton();

first.Text = "blabla";

first.OnClick += new EventHandler(first_Click);

this.Controls.Add(first);

}

void first_Click(object sender, EventArgs e)

{

//doing something....

}

You need to handle the OnClick event,... and since your Linkbutton is not bound to the correct event, it is not entering the first_Click method.

Hope this helps...

---

________________________________________ Gautham S Pai [MCAD]

Answer 2

I am not sure, I understand you...

There is only one event to click:  linkButton.Click

I am tryed do this:

first.OnClientClick = "firstClick()";

//or this

first.Attributes.Add("onClick","firstClick()");

private void firstClick()

{

//SOME CODE

}

But it doesnt work, but if I tryed this:

first.OnClientClick = "alert()";

//or this

first.Attributes.Add("onClick","alert()");

I think its some problem with handler of onClick event, I dont know how to add handler for this event.....

Answer 3

Lukas,

try this code. you need to have the eventhandler binding in the OnInit Function.

I have tested this code and it works well.

Build your code with the help of this sample - 

namespace TestWebPart

{

public class TestWebPart : WebPart

{

LinkButton first;

protected override void OnInit(EventArgs e)

{

first = new LinkButton();

first.Click += new EventHandler(first_Click);

}

void first_Click(object sender, EventArgs e)

{

Context.Response.Write("first_Click vent is fired");

}

protected override void CreateChildControls()

{

first.Text = "blabla";

this.Controls.Add(first);

}

protected override void Render(System.Web.UI.HtmlTextWriter writer)

{

base.Render(writer);

}

}

}


Hope this helps...

---

________________________________________ Gautham S Pai [MCAD]

Answer 4

Ok, I am sorry but this code is not runnig well...

I copy exactly this code to my project and runtime never jump to firs_Click function.....

Are you using:

 Microsoft.SharePoint.WebPartPages.WebPart
 System.Web.UI.WebControls.WebParts.WebPart

to inherit on main class??

But I of course tryed use both, nothing happend.... Have you any idea where is the problem???

Answer 5

i am not sure Lukas, as far as the linkbutton issue is concerned, to my knowledge, i dont think it has anything to do with inheritance of Web part from SharePoint or ASP.NEt

---

________________________________________ Gautham S Pai [MCAD]