从字符串“"转换输入'boolean'无效。 [英] Conversion from string "" to type 'boolean' is not valid.

问题描述

大家好，



错误发生在以下行，

我在vb.net中使用的代码

代码：

Hi All,

The error occurs on the below line,
the code i was used in vb.net
code:

Dim FromID As String=""
If IsNothing(FromID) OrElse String.Empty Then ....

我的错误是：

My error is :

Conversion from string "" to type 'Boolean' is not valid.

Hopefully someone might be able to help. Thanks

我尝试过：



从字符串到类型'Boolean'的转换无效。

What I have tried:

Conversion from string "" to type 'Boolean' is not valid.

推荐答案

尝试：

Try:

If IsNothing(FromID) OrElse String.IsNullOrEmpty(myStringVariableName) Then...

这篇关于从字符串“"转换输入'boolean'无效。的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！