为什么我在客户端上看不到错误异常？

Question

我有这个动作方法：

    public ActionResult SavePoint(PointRequest point)
    {
        //some logic
        
        throw new System.ArgumentException("Error, no point found");
    }
    
    and this ajax:
    
    function saveFeature(feature, callback, error) {
    $.ajax({
        url: window.homeUrl + "Feature/SavePoint",
        type: "GET",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        data: feature,
        success: callback,
        error: function (xhr, ajaxOptions, thrownError) {
                alert(thrownError);     
            }
        });
    }

    

在保存功能功能中，我想提醒异常文本：'错误，找不到点'。

但是 throwedError 是空的，知道为什么在 throwedError 中我没有看到错误消息吗？

Answer 1

Jaromanda X 和 Brett Caswell 在他们的 cmets 中回答了“为什么”。但你可以这样做：

    public ActionResult SavePoint(PointRequest point)
    {
        try
        {
            //some logic
        }
        catch (Exception ex)
        {
            return BadRequest("Error, no point found");
        }
    }

或者，向用户包含实际错误：

public ActionResult SavePoint(PointRequest point)
{
    try
    {
        //some logic
    }
    catch (Exception ex)
    {
        return BadRequest($"Error, no point found. Message: {ex.InnerException.Message}");
    }
}