How to add try and catch to all action result lines and display error

Hello Ahmad,

Since you have confirmed that, your code works fine in your local. Please check the Application Pool which you have configured in IIS. Check the App Pool User has the access to the database where you are trying to insert records. I strongly believe, it could be a permission issue.

However,  To catch and display the error on the JSON result, you can wrap the code in a try-catch block and set the error message in the responseData object when an exception occurs. Here's an updated version of your code with a try-catch block:

public JsonResult RequesterIndex(ResignationRequester resignationRequester)
{
    dynamic responseData = new ExpandoObject();
    responseData.success = false;
    responseData.message = "";

    try
    {
        var filenumber = resignationRequester.EmpID;
        if (Session[SessionKeys.UserCode] != null)
        {
            JDEUtility jde = new JDEUtility();
            if (resignationRequester.othersInput != null)
            {
                resignationRequester.EmployeeRestrictions = resignationRequester.othersInput;
            }
            resignationRequester.DeptCode = Session[SessionKeys.DepartmentCode].ToString();
            resignationRequester.EmpID = Convert.ToInt32(Session[SessionKeys.UserCode]);
            resignationRequester.EmpName = Convert.ToString(Session[SessionKeys.Username]);
            resignationRequester.Dept = Convert.ToString(Session[SessionKeys.Department]);
            resignationRequester.Designation = Convert.ToString(Session[SessionKeys.Designation]);
            resignationRequester.PayGrade = Convert.ToString(Session[SessionKeys.PayGrade]);
            resignationRequester.CompanyCode = Convert.ToString(Session[SessionKeys.Company]);

            resignationRequester.Gender = Convert.ToString(Session[SessionKeys.Gender]);

            resignationRequester.ServiceDuration = Convert.ToString(Session[SessionKeys.ServiceDuration]);
            int noticeperiod = Convert.ToInt32(Session[SessionKeys.NoticePeriod]);
            int julianRequestDate = JulianDate.DateTimeToJulian(resignationRequester.LastWorkingDate);
            int SubmitionDate = JulianDate.DateTimeToJulian((DateTime)Session[SessionKeys.SubmitionDate]);
            int JoinedDate = JulianDate.DateTimeToJulian((DateTime)Session[SessionKeys.JoinDate]);
            int storedLastedWorkingDate = JulianDate.DateTimeToJulian((DateTime)Session[SessionKeys.LastWorkingDate]);

            if (ModelState.IsValid)
            {
                responseData.success = true;
                responseData.message = "Resignation Submission form Created successfully";
            }
            else
            {
                responseData.success = false;
                responseData.message = "Some Required Fields Not Added";
            }
        }
        else
        {
            responseData.success = false;
            responseData.message = "No Data For This File No";
        }
    }
    catch (Exception ex)
    {
        // Catch and handle the exception
        responseData.success = false;
        responseData.message = $"An error occurred: {ex.Message}";
    }

    return Json(responseData);
}

You can enhance your RequesterIndex action in ASP.NET MVC by adding a try-catch block to catch and handle any exceptions that might occur. Additionally, you can return the exception details along with the JSON response.

Here's an example of how you can modify your action:
 

public JsonResult RequesterIndex(ResignationRequester resignationRequester)
{
    dynamic responseData = new ExpandoObject();
    responseData.success = false;
    responseData.message = "";

    try
    {
        // Your existing code...

        if (ModelState.IsValid)
        {
            responseData.success = true;
            responseData.message = "Resignation Submission form Created successfully";
        }
        else
        {
            responseData.success = false;
            responseData.message = "Some Required Fields Not Added";
        }
    }
    catch (Exception ex)
    {
        // Log the exception or take any necessary actions
        responseData.success = false;
        responseData.message = "An error occurred: " + ex.Message;
    }

    return Json(responseData);
}

In your JavaScript code, you can log or display the error message:

$('#btnsubmit').click(function () {
    var empidval = $("#txtempid").val();

    $("#ResignationApp").submit(function (e) {
        e.preventDefault();

        var formData = $(this).serialize();
        $.ajax({
            dataType: 'json',
            url: '@Url.Action("RequesterIndex", "Resignation")',
            data: formData,
            success: function (response) {
                // Handle success
            },
            error: function (error) {
                // Display or log the error message
                console.error("Error:", error.responseJSON.message);
            }
        });
    });
});

 

This way, if an exception occurs on the server, you can easily identify the error message on the client side for debugging and troubleshooting.