使用mysql服务器数据库在WPF数据网格控件中进行数据绑定 [英] Data binding in WPF datagrid control using mysql server database

问题描述

我正在尝试将数据表从MySQL导入到datagrid wpf。



但错误（'空引用异常未被用户代码'对象引用处理未设置为对象的实例。'Pin ）显示此行代码：

I'm trying to import datatable from MySQL to datagrid wpf .

But error ('Null Reference exception was unhandled by user code 'Object reference not set to an instance of an object.' Pin) shows at this line code :

string ConString = ConfigurationManager.ConnectionStrings["ConString"].ConnectionString;

我认为这是一个配置问题，但我的连接信息是正确的！



我尝试过：



我按照本文中的步骤操作：< br $> b $ b

www.codeproject.com/Tips/362436/Data-binding-in-WPFquestsGrid-control?msg=5389895#xx5389895xx



这是我的APP.config

I think it's a configuration problem , but my connection information are correct !

What I have tried:

I followed the steps in this article :

www.codeproject.com/Tips/362436/Data-binding-in-WPF-DataGrid-control?msg=5389895#xx5389895xx

and this is my APP.config

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

    <connectionStrings>
      <add connectionString ="SERVER=; DATABASE=; UID=; PASSWORD= ;" name="ConString"/>
    </connectionStrings>

</configuration>

我是初学者在WPF中，感谢您的帮助:)抱歉我的英语不好。

I'm a beginner In WPF ,Thank you for any help :) Sorry for my bad English .

推荐答案

发布解决方案以关闭帖子.OP已确认问题已解决.App.config的第二个副本导致问题。

Posting solution to close off post. OP has confirmed that the problem is resolved. A second copy of App.config was causing the problem.

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