Despite searching for an answer to this question, I have yet to find a solution that works for me.
My ASP web page contains multiple buttons with different functions, as well as a dropdown box filled with objects. When I select an item from the dropdown, I want to trigger a function on the server in my C# code that requires a couple of key variables to be passed to an API. If only one parameter can be passed, it could be done as a JSON string, so flexibility in passing parameters is not an issue here.
I'm struggling to determine the best approach for this task. I've explored options like using AJAX calls, utilizing the OnCommand attribute within the ASP button, WebMethods, and some other less common methods. While considering these possibilities, I prefer to avoid using hidden fields as it seems rather hacky. However, if that turns out to be the most efficient method, I am willing to reconsider.
The relevant sections of my code are outlined below:
Javascript code
function testAJAX()
{
//The console.log was called successfully, however the ProcessData function was never hit correctly
/*console.log("hello");
PageMethods.ProcessData("Hello", successAjax, failAjax);*/
$.ajax({
type: "POST",
url: "UserManagement.aspx/ProcessData",
data: '{data:"Hello"}', // passing the parameter
contentType: "application/x-www-form-urlencoded; charset=utf-8",
dataType: "text",
success: function(retValue) {
// Do something with the return value from.Net method
alert(retValue);
}
});
}
function successAjax(response) {
alert(response.get_message());
}
function failAjax(response) {
alert(response.get_message());
}
C# code (debugging was attempted on data += " from the server";)
[WebMethod(EnableSession = true)]
public static string ProcessData(string data)
{
data += " from the server";
return data;
}
Calling the Javascript code
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" EnablePageMethods="true" runat="server" />
<button onclick="testAJAX()">Test AJAX</button>
</form>
Unfortunately, I am unable to get any Ajax or Web Method calls to reach my breakpoint in the server-side code. I have tried:
- Adapting the AJAX code from the top answer in this post to point to my function (url: "UserManagement.aspx/ProcessData")
- Moving my script tag inside the body tag
- Adding a ScriptManager to my form
- Ensuring that I am not using a Master page because it may affect functionality
- Attempting to use PageMethods.ProcessData(). This seemed promising as it triggered the success function, but did not call my ProcessData function...
I am perplexed as to why the debugging does not work on the server side. Any suggestions would be greatly appreciated. I believe I must be overlooking a minor detail, but whatever it is, it's impeding progress. Once I can debug successfully, I should be able to proceed. Thank you all in advance.