C#/ASP.Net - ImageButton OnClick CodeBehind function

Question

I've got default.aspx/default.aspx.cs and other.cs where i "store" a bunch of functions.

In my default.aspx i've :

 <asp:ImageButton ID="ImageButton1" CssClass="btn_img" ImageUrl="./images/1.png" runat="server" OnClick='<%# "setFunction(" +Eval("aGUID") +")" %>' />

in my default.aspx.cs

protected void setFunction(object sender, ImageClickEventArgs e)
{
    string istr = e.ToString();
    var iguid = new Guid(istr);
    // this are classes/functions stored in other.cs
    ManageFun mfun = new ManageFun();
    mfun.setMM(iguid);
}

I though i was doing all right, but can't figure out what i'm doing wrong! In matter of fact it does nothing!

Apreciate any help!

Thanks!

Shouldn't it just be OnClick="setFunction" ?

Esko
– Esko

2016-11-03 13:14:45 +00:00
Commented Nov 3, 2016 at 13:14 — Esko
– Esko, Commented Nov 3, 2016 at 13:14

sagar43 · Accepted Answer · 2016-11-03 13:21:12Z

2

You can try this

  <h3>ImageButton Sample</h3>

  Click anywhere on the image.<br /><br />

  <asp:ImageButton id="imagebutton1" runat="server"
       AlternateText="ImageButton 1"
       ImageAlign="left"
       ImageUrl="images/pict.jpg"
       OnClick="ImageButton_Click"/>

  <br /><br />

  <asp:label id="Label1" runat="server"/>

and C# code

public void ImageButton_Click(object sender, ImageClickEventArgs e) 
      {
         Label1.Text = "You clicked the ImageButton control at the coordinates: (" + 
                       e.X.ToString() + ", " + e.Y.ToString() + ")";
      }

No need to write these <%#

Here is the reference Click

answered Nov 3, 2016 at 13:21

sagar43

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1 Comment

rkpt Over a year ago

my setFunction is wating for a parameter of GUID type, shouldn't i pass it with Eval ? How is my function get to know the parameter ?

Tummala Krishna Kishore · Accepted Answer · 2016-11-03 13:50:38Z

0

Basically asp:ImageButton with Onclick which will not call the server side code with Eval.

Edit:

You can directly call like this :

<asp:ImageButton ID="ImageButton1" CssClass="btn_img" ImageUrl="./images/1.png" runat="server" OnClick="setFunction"  />

if you want to pass the parameter to that function you can assign the param to the CommandArguement as below

CommandArguement='<%# Eval("aGUID") %>'

in your SetFunction you can retrieve like this

string val = e.CommandArguement.ToString()

edited Nov 3, 2016 at 13:50

answered Nov 3, 2016 at 13:15

Tummala Krishna Kishore

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2 Comments

Tummala Krishna Kishore Over a year ago

@esko fixed typo .. and i read my answer it giving some different meaning which i fixed

rkpt Over a year ago

my setFunction is wating for a parameter of GUID type, shouldn't i pass it with Eval ? How is my function get to know the parameter ?

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