pass parameter into a function with asp:Button

Question

I'm trying to pass a parameter into a function onClick of an asp:Button

    <asp:Button name='ProductID' onclick="confirm_product_Click" ID="confirmitem" runat="server" Text="accept">

the parameter is <%=product.ProductId %>.

I cant use CommandArguments because the value is passed like plain text.

I tried with hidden input but it failed.

I also tried using form action:

<form method="post" action="?ProductID=<%=product.ProductId %>"> 
<asp:Button name='ProductID' onclick="confirm_product_Click" ID="confirmitem" runat="server" Text="accept">
</form>

but it doesn't send the value to the function. Can someone help me solve this problem?

score 38 · Accepted Answer · edited May 30 '18 at 17:56

38

in your aspx

<asp:Button ID="test" runat="server" CommandArgument='<%#Eval("product.ProductId")%>' CommandName="ThisBtnClick" OnClick="MyBtnHandler" />

in code behind

void MyBtnHandler(Object sender, EventArgs e)
{
   Button btn = (Button)sender;
   switch (btn.CommandName)
   {
      case "ThisBtnClick":
         DoWhatever(btn.CommandArgument.ToString());
         break;
      case "ThatBtnClick":
         DoSomethingElse(btn.CommandArgument.ToString());
         break;
   }
}

edited May 30 '18 at 17:56

Icculus018

1,018
11
19

answered May 26 '15 at 15:53

Zohaib Waqar

1,204
11
18

2

zohaib thank you for your time. but its still doesnt work, the CommandArgument is empty: "". – Yanay Hollander May 26 '15 at 18:18
1

if product id is in int then parse it.. int.parse (btn.CommandArgument.ToString()) if still not work try this also try this <%=Eval("product.ProductId")%> – Zohaib Waqar May 27 '15 at 15:14
I believe that is not possible to add c# code in a asp component. I tried this solution and I have the same result as @YanayHollander : empty – toscanelli Feb 20 '23 at 10:54
@toscanelli try to use asp:reapeater – Yanay Hollander Feb 21 '23 at 11:19

score 0 · Answer 2 · edited Jul 15 '21 at 12:33

0

If it is a LinkButton...

<asp:LinkButton ID="test" runat="server" CommandArgument='<%#Eval("product.ProductId")%>' OnClick="MyBtnHandler" /> 

 protected void MyBtnHandler(object sender, EventArgs e)
        {
         
string ProductID = ((LinkButton)sender).CommandArgument.ToString();
...
}

edited Jul 15 '21 at 12:33

Stephan Vierkant

9,674
8
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answered Jul 15 '21 at 06:39

Akshay Kokil

1

pass parameter into a function with asp:Button

2 Answers2

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