在VB.NET中进行类型转换的问题？ [英] ??problems typecasting in VB.NET??

问题描述

大家好，


我在尝试在VB.Net中输入强制转换时遇到问题。我想用16位无符号整数读取

并将其转换为带符号的16位
整数。我正在使用以下代码行：


Dim wordVal As Short


wordVal = CShort（Val（input.Text））

output.Text = wordVal


每当input.Text 32767，我都会遇到运行时错误。寻找一些

的建议。


提前致谢，

-weg

解决方案

尝试BitConverter类


-
http://www.alvas.net - C＃和VB.Net开发人员的音频工具

< we *** @ drexel埃杜??????? / ???????? ？ ???????? ?????????：

新闻：11 ********************* @ v23g2000prn.googlegro ups.com。 ..

大家好，


我在尝试在VB.Net中输入强制转换时遇到问题。我想用16位无符号整数读取

并将其转换为带符号的16位
整数。我正在使用以下代码行：


Dim wordVal As Short


wordVal = CShort（Val（input.Text））

output.Text = wordVal


每当input.Text 32767，我都会遇到运行时错误。寻找一些

的建议。


提前致谢，

-weg

< we *** @ drexel.eduschrieb

大家好，


我在尝试在VB.Net中输入强制转换时遇到问题。我想用16位无符号整数读取

并将其转换为带符号的16位
整数。我正在使用以下代码行：


Dim wordVal As Short


wordVal = CShort（Val（input.Text））

output.Text = wordVal


每当input.Text 32767，我都会遇到运行时错误。寻找

一些建议。

我不确定你要做什么。如果你想输入值32767，

为什么不使用不同的数据类型呢？

Armin

< blockquote>我不确定你要做什么。如果要输入值32767，

为什么不使用不同的数据类型？

我不确定你要做什么。如果你想输入值32767，

为什么不使用不同的数据类型？


Armin

要从unsigned int转换为signed int，代码会读取

这样的东西：


如果unsignedInt 32767那么

signedInt = unsignedInt - 65535

否则

signedInt = unsignedInt

结束如果


我想通过类型转换进行上述转换，所以每次读入值时，我都没有

来调用上面的函数。我会

而是做类似的事情：


signedInt = CShort（unsignedInt）


但是我得到溢出错误。

Hi all,

I''m having problems trying to type cast in VB.Net. I''d like to read
in a 16 bit unsigned integer and convert it to a signed 16 bit
integer. I''m using the following line of code:

Dim wordVal As Short

wordVal = CShort(Val(input.Text))
output.Text = wordVal

Whenever input.Text 32767, I get a run-time error. Looking for some
suggestions.

Thanks in advance,
-weg

解决方案

Try BitConverter class

--
http://www.alvas.net - Audio tools for C# and VB.Net developers
<we***@drexel.edu???????/???????? ? ???????? ?????????:
news:11*********************@v23g2000prn.googlegro ups.com...

Hi all,

I''m having problems trying to type cast in VB.Net. I''d like to read
in a 16 bit unsigned integer and convert it to a signed 16 bit
integer. I''m using the following line of code:

Dim wordVal As Short

wordVal = CShort(Val(input.Text))
output.Text = wordVal

Whenever input.Text 32767, I get a run-time error. Looking for some
suggestions.

Thanks in advance,
-weg

<we***@drexel.eduschrieb

Hi all,

I''m having problems trying to type cast in VB.Net. I''d like to read
in a 16 bit unsigned integer and convert it to a signed 16 bit
integer. I''m using the following line of code:

Dim wordVal As Short

wordVal = CShort(Val(input.Text))
output.Text = wordVal

Whenever input.Text 32767, I get a run-time error. Looking for
some suggestions.

I''m not sure what you are trying to do. If you want to input values 32767,
why not use a different data type?
Armin

I''m not sure what you are trying to do. If you want to input values 32767,

why not use a different data type?

I''m not sure what you are trying to do. If you want to input values 32767,
why not use a different data type?

Armin

To convert from an unsigned int to a signed int, the code would read
something like this:

If unsignedInt 32767 Then
signedInt = unsignedInt - 65535
Else
signedInt = unsignedInt
End If

I would like to do the above conversion by typecasting so I don''t have
to call a function like above every time I read in a value. I would
rather do something like:

signedInt = CShort(unsignedInt)

but I get an overflow error.

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