Until this is resolved, please run the attached .REG file to correct the bug. This registry file contains the following information, if you wish to generate your own .REG file:
[HKEY_CLASSES_ROOT/Interface/{00020404-0000-0000-C000-000000000046}]
@="IEnumVARIANT"
[HKEY_CLASSES_ROOT/Interface/{00020404-0000-0000-C000-000000000046}/NumMethods]
@="7"
[HKEY_CLASSES_ROOT/Interface/{00020404-0000-0000-C000-000000000046}/ProxyStubClsid]
@="{00020421-0000-0000-C000-000000000046}"
[HKEY_CLASSES_ROOT/Interface/{00020404-0000-0000-C000-000000000046}/ProxyStubClsid32]
@="{00020421-0000-0000-C000-000000000046}"
Download Hotfix.zip
http://support.installshield.com/kb/view.asp?pcode=ALL&articleid=Q106194
Until this is resolved, please run the attached .REG file to correct the bug. This registry file contains the following information, if you wish to generate your own .REG file:[HKEY_CLASSES_ROOT/In
验证
时
出错
.
HRESULT
=
'
80040155
'
解决
我在制作安装程序
时
，出现这样的错误，实际上这是VS的一个Bug,当你安装了InstallField 而后来又删除了，就会出现
解决方法：建一个.reg文件，写入
REGEDIT4
[HKEY_CLASSES_ROOT\Interface\{00020404-0000-0000-C000-000000000046}] ...
System.InvalidOperationException
HResult
=0x80131509 Message=ExecuteReader: Connection 属性尚未初始化。 Source=<无法计算异常源> StackTrace: <无法计算异常堆栈跟踪>
using (SqlConnection connection = new SqlConnection(connectionString))
SqlCommand command = new SqlCommand(queryString, connection);
connection.Open();
SqlDataReader reader = command.ExecuteReader();
// 处理查询结果
其中，`connectionString` 是连接字符串，`queryString` 是查询语句。请根据具体情况修改上述代码。
