APPLICATION中的实例失败 [英] Instance failure in APPLICATION

问题描述

Hello先生，

我的WinForms应用程序在客户端计算机上出错，当我登录到应用程序时，他们的错误是实例失败。

然后我为此错误尝试了很多解决方案，但仍然发生了相同的错误.plzz为我提供了正确的解决方案。他们的连接字符串如下：< connectionstrings>

< add name =ABC.Properties.Settings .dbLnString

connectionString =Data Source = NOTEBOOK \ SQLEXPRESS; Initial Catalog = dbLn; User ID = sa; Password = sa1

providerName =System.Data .SqlClient>



我尝试过：



check所有sql服务，在连接字符串中集成secuirity = true，多次更改数据源名称，但仍然发生此错误

Hello Sir,
My WinForms application have an error on client machine,when i login to application their are error Occured i.e., "Instance Failure".
then i tried many solutions for this error but still same error occured.plzz give me proper solution for this.Their connection string is as follows:<connectionstrings>
<add name="ABC.Properties.Settings.dbLnString"
connectionString="Data Source=NOTEBOOK\SQLEXPRESS;Initial Catalog=dbLn;User ID=sa;Password=sa1"
providerName="System.Data.SqlClient" >

What I have tried:

checked all sql services,integrated secuirity=true in connection strings,many times changed data source name ,But still this error occured

推荐答案

检查连接字符串：简单的SQL连接字符串创建 [ ^ ]

没有我们无法确定的确切错误消息，但它所指的实例几乎肯定是SQL Server实例 - 这意味着您的连接字符串失败。

Check that connection string: Simple SQL Connection String Creation[^]
Without the exact error message we can't be sure, but the instance it's referring to is almost certainly the SQL Server instance - which means your connection string is failing.

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