C# 如何获取错误所在行数

标签：StackTrace Exception HelpLink C# 所在 --- 获取 ex WriteLine

三种思路，一种是利用error.StackTrace，第二种是try-catch找到错误行数, 第三种是:  System.Diagnostics.Debug.WriteLine() +  DebugView工具

一、error.StackTrace代码

ex.StackTrace.Substring(ex.StackTrace.IndexOf("行号"), ex.StackTrace.Length - ex.StackTrace.IndexOf("行号"))

 

二、try-catch代码

try
{
   // 代码块
}
catch(Exception ex)
{
    MessageBox.Show(ex.StackTrace);
}

 

三. System.Diagnostics.Debug.WriteLine() + DebugView工具

1.引用

using System.Diagnostics;

2.显示在DebugView的信息

Debug.WriteLine(DateTime.Now.ToString("HH-mm-ss")+" "+DateTime.Now.Millisecond.ToString() + " cti_message", "my");

3.在Dbgview.exe 过滤其它信息
Edit -> Filter/Hightlight... -> include: 中输入 *my
点击OK后,便可用DebugView调试C#程序了。

 

MSDN StackTrace示例

下面的代码示例引发一个 Exception，然后捕捉该异常，并使用 StackTrace 属性显示堆栈跟踪。

// Example for the Exception.HelpLink, Exception.Source,
// Exception.StackTrace, and Exception.TargetSite properties.
using System;
 
namespace NDP_UE_CS
{
    // Derive an exception; the constructor sets the HelpLink and 
    // Source properties.
    class LogTableOverflowException : Exception
    {
        const string overflowMessage = "The log table has overflowed.";
 
        public LogTableOverflowException( 
            string auxMessage, Exception inner ) :
                base( String.Format( "{0} - {1}", 
                    overflowMessage, auxMessage ), inner )
        {
            this.HelpLink = "http://msdn.microsoft.com";
            this.Source = "Exception_Class_Samples";
        }
    }
 
    class LogTable
    {
        public LogTable( int numElements )
        {
            logArea = new string[ numElements ];
            elemInUse = 0;
        }
 
        protected string[ ] logArea;
        protected int       elemInUse;
 
        // The AddRecord method throws a derived exception if 
        // the array bounds exception is caught.
        public    int       AddRecord( string newRecord )
        {
            try
            {
                logArea[ elemInUse ] = newRecord;
                return elemInUse++;
            }
            catch( Exception e )
            {
                throw new LogTableOverflowException( 
                    String.Format( "Record \"{0}\" was not logged.", 
                        newRecord ), e );
            }
        }
    }
 
    class OverflowDemo 
    {
        // Create a log table and force an overflow.
        public static void Main() 
        {
            LogTable log = new LogTable( 4 );
 
            Console.WriteLine( 
                "This example of \n   Exception.Message, \n" +
                "   Exception.HelpLink, \n   Exception.Source, \n" +
                "   Exception.StackTrace, and \n   Exception." +
                "TargetSite \ngenerates the following output." );
 
            try
            {
                for( int count = 1; ; count++ )
                {
                    log.AddRecord( 
                        String.Format( 
                            "Log record number {0}", count ) );
                }
            }
            catch( Exception ex )
            {
                Console.WriteLine( "\nMessage ---\n{0}", ex.Message );
                Console.WriteLine( 
                    "\nHelpLink ---\n{0}", ex.HelpLink );
                Console.WriteLine( "\nSource ---\n{0}", ex.Source );
                Console.WriteLine( 
                    "\nStackTrace ---\n{0}", ex.StackTrace );
                Console.WriteLine( 
                    "\nTargetSite ---\n{0}", ex.TargetSite );
            }
        }
    }
}
 
/*
This example of
   Exception.Message,
   Exception.HelpLink,
   Exception.Source,
   Exception.StackTrace, and
   Exception.TargetSite
generates the following output.
Message ---
The log table has overflowed. - Record "Log record number 5" was not logged.
HelpLink ---
http://msdn.microsoft.com
Source ---
Exception_Class_Samples
StackTrace ---
   at NDP_UE_CS.LogTable.AddRecord(String newRecord)
   at NDP_UE_CS.OverflowDemo.Main()
TargetSite ---
Int32 AddRecord(System.String)
*/

 

转载自：

C# 如何获取错误所在行数

参考文档：

Exception.StackTrace 属性 | 微软

标签：StackTrace,Exception,HelpLink,C#,所在,---,获取,ex,WriteLine
From： https://www.cnblogs.com/Yan3399/p/17104257.html