how to display the selected values of checkboxlist in an alert in javascript

Question

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how to display the selected values of checkboxlist in an alert in javascript
eg:

C#

<asp:CheckBoxList ID="chklist" runat="server" >
<asp:ListItem Text="Apple" Value="Apple">
<asp:ListItem Text="Banana" Value="Banana">
<asp:ListItem Text="Orange" Value="Orange">

if we select any 3 items the output should be as below
output: Apple , Banana and Orange

Posted 19-Aug-14 1:27am

Member 11021807

Updated 19-Aug-14 22:41pm

Nelek

v2

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Ashi0891 19-Aug-14 7:34am

what have you tried yourself? Did you google it? even if you just copy paste your title in google search engine you will get exact answers and similar posts on codeproject.com itself. Please try to solve your problem on your own before pasting it here!!

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Ashi0891 · Answer 1 · 2014-08-19T02:15:00

aspx page code:

XML

<asp:CheckBoxList ID="CheckBoxList1" runat="server">
  <asp:ListItem Text="Apple" Value="Apple"></asp:ListItem>
  <asp:ListItem Text="Banana" Value="Banana"></asp:ListItem>
  <asp:ListItem Text="Orange" Value="Orange"></asp:ListItem>
</asp:CheckBoxList>

<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />

code behind(aspx.cs):

C#

protected void Button1_Click(object sender, EventArgs e)
    {
        string abc = "";
        foreach (ListItem item in CheckBoxList1.Items)
        {
            if (item.Selected)
            {
                abc += item.Value + ',';
            }
        }
        string test = "you have selected " + abc;
        Label labelshow = new Label();
        labelshow.Text = "<script language='javascript'>" + Environment.NewLine + "window.alert('" + test + "')</script>";
        Page.Controls.Add(labelshow);
    }

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