How to pass a parameter by pressing a button

Question

I have a situation: I show a lot of rows from the database on the page. just by creating dynamic rows ( <% foreach (res in DBVar) %> ). Each line has a button. each button uses only one OnClick method. I really don’t care about the name (value) of these buttons, but I can’t take how I can pass the parameter (for example, the row identifier from the DB ( res.ID )) from the .aspx page to the OnClick method, (Using LINQ to SQL) I tried to assign my parameter to the name (value) of the button with " <input type="button" value="<%= "string"+DBVar.ID%> "etc. runat = the server cannot even take the variable to the name (value) coz of this I used only the input method.

Answer 1

Use the OnCommand event and assign a CommandArgument

  <asp:Button ID="Button1" runat="server" Text="Submit" CommandArgument='<%= res.ID %>' OnCommand="Button1_Click" /> 

in code for

 protected void Button1_Click(Object sender, CommandEventArgs e) { string ID=e.CommandArgument.ToString(); } 

Answer 2

Set the CommandName and CommandArgument of the buttons during binding and read them back in your onclick event.

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.button.commandname.aspx

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.button.commandargument.aspx

Answer 3

check this link

passing dynamic values ​​for each row as a list

he did the same and he also shows how to access the values ​​in the code in