取消处理引用异常 [英] Unhandle Reference Exception

问题描述

private void validateName_Click(object sender, EventArgs e)
        {
            if (nameObj.InitializeDataFiles() == mdNAMEOBJECTLib.ProgramStatus.NoError)
            {               
                try
                {
                    File = new StreamReader("../../mdName.sdf");
                }
                catch (Exception)
                {
                    resultString.Text = "Can't open sample file";
                }               
                
                while ((FullName = File.ReadLine()) != null)
                {
                    nameObj.ClearProperties();
                    nameObj.FullName = FullName;
                    nameObj.Parse();
                    fullName.Text = FullName;
                    Records++;
                }
            }
        }

我收到错误消息:mdNameObj.exe中发生了类型为"System.NullReferenceExceiption"的未处理异常.
附加信息:对象引用未设置对象的实例.

如何解决此错误.谢谢，

I got error message:Unhandle exception of type ''System.NullReferenceExceiption'' occured in mdNameObj.exe.
Additional Information: Object reference not set an instance of an object.

How to fix this error. Thanks,

推荐答案

使用调试器找出哪个对象为null，并纠正错误(您没有指出要抛出异常的代码行，因此，我认为您尚未使用调试器).最可能的罪魁祸首是nameObj和File(由于它也是.Net命名空间的名称，因此作为变量名很烂).

Use the debugger to find out which object is null, and fix your mistake (you didn''t indcate what line of code was throwing the excveption, so I assume you haven''t used the debugger yet). The most likely culprits are nameObj and File (which sucks as a variable name since it''s also the name of a .Net nameSpace).

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