无法测试BackColor的控件 [英] Not able to test BackColor of control
问题描述
我有一个Windows窗体,我试图设置一个控件的BackColor
并在我做之前检查颜色:
如果控制.BackColor = System.Drawing.Color.Blue然后
ChangeColor(control,Color.Red)
Else
ChangeColor(control,Color。蓝色)
结束如果
但我收到错误:
运营商''=''不是为类型''System.Drawing.Color''和
定义''System.Drawing.Color''。
我显然可以这样做:
control.BackColor = System.Drawing.Color.Blue
为什么我不能测试颜色?
>
谢谢,
Tom
I have a Windows form where I am trying to set the BackColor of a control
and check the color before I do it:
If control.BackColor = System.Drawing.Color.Blue Then
ChangeColor(control, Color.Red)
Else
ChangeColor(control, Color.Blue)
End If
But I get an error:
Operator ''='' is not defined for types ''System.Drawing.Color'' and
''System.Drawing.Color''.
I can apparently do:
control.BackColor = System.Drawing.Color.Blue
Why can''t I test the color?
Thanks,
Tom
推荐答案
11月3日,7日:58 pm,tshad < t ... @dslextreme.comwrote:
On Nov 3, 7:58 pm, "tshad" <t...@dslextreme.comwrote:
我有一个Windows窗体,我试图设置一个控件的BackColor
并在我做之前检查颜色:
如果control.BackColor = System.Drawing.Color.Blue那么
ChangeColor(control,Color.Red )
其他
ChangeColor(对照,Color.Blue)
结束如果
但是我得到一个错误:
运算符''=''没有定义类型''System.Drawing.Color''和
''System.Drawing .Color''。
我显然可以这样做:
control.BackColor = System.Drawing.Color.Blue
为什么我不能测试颜色?
谢谢,
Tom
I have a Windows form where I am trying to set the BackColor of a control
and check the color before I do it:
If control.BackColor = System.Drawing.Color.Blue Then
ChangeColor(control, Color.Red)
Else
ChangeColor(control, Color.Blue)
End If
But I get an error:
Operator ''='' is not defined for types ''System.Drawing.Color'' and
''System.Drawing.Color''.
I can apparently do:
control.BackColor = System.Drawing.Color.Blue
Why can''t I test the color?
Thanks,
Tom
尝试使用:
如果是control.BackColor.Equals(System.Drawing.Color.Blue)那么
。 ...
其他
....
结束如果
-
Tom Shelton
Try using:
If control.BackColor.Equals(System.Drawing.Color.Blue ) Then
....
else
....
end if
--
Tom Shelton
" Tom Shelton" < to ********* @ comcast.netwrote in message
news:11 ********************* @ d55g2000hsg.googlegro ups.com ...
"Tom Shelton" <to*********@comcast.netwrote in message
news:11*********************@d55g2000hsg.googlegro ups.com...
11月3日晚上7:58,tshad < t ... @ dslextreme.comwrote:
On Nov 3, 7:58 pm, "tshad" <t...@dslextreme.comwrote:
>我有一个Windows表单,我试图设置一个控件的BackColor
和在我做之前检查颜色:
如果control.BackColor = System.Drawing.Color.Blue那么
ChangeColor(control,Color.Red)
其他
ChangeColor(control,Color.Blue)
结束如果
但是我收到错误:
运算符'''''没有为类型''系统定义.Drawing.Color''和
''System.Drawing.Color''。
我显然可以这样做:
control.BackColor = System.Drawing。 Color.Blue
为什么我不能测试颜色?
谢谢,
Tom
>I have a Windows form where I am trying to set the BackColor of a control
and check the color before I do it:
If control.BackColor = System.Drawing.Color.Blue Then
ChangeColor(control, Color.Red)
Else
ChangeColor(control, Color.Blue)
End If
But I get an error:
Operator ''='' is not defined for types ''System.Drawing.Color'' and
''System.Drawing.Color''.
I can apparently do:
control.BackColor = System.Drawing.Color.Blue
Why can''t I test the color?
Thanks,
Tom
尝试使用:
如果control.BackColor.Equals(System.Drawing.Color.Blue)那么
Try using:
If control.BackColor.Equals(System.Drawing.Color.Blue ) Then
工作正常。
我需要在哪里使用.Equals?
如果我设置一个值,我会假设作业( =),我会
也可以用同样的方式测试它吗?
如果:
control.BackColor = System.Drawing.Color.Blue
为什么不
如果control.BackColor = System.Drawing.Color.Blue那么...
谢谢,
Tom
That worked.
Where else do I need to use .Equals?
I would assume that if I set a value using an assignment (=), that I would
also be able to test it the same way?
If :
control.BackColor = System.Drawing.Color.Blue
why not
IF control.BackColor = System.Drawing.Color.Blue then ...
Thanks,
Tom
...
其他
...
结束如果
-
Tom Shelton
...
else
...
end if
--
Tom Shelton
" tshad" < tf*@dslextreme.comschrieb:
"tshad" <tf*@dslextreme.comschrieb:
>我有一个Windows表单,我试图设置控件的BackColor
并检查我之前的颜色:
如果control.BackColor = System.Drawing.Color.Blue那么
ChangeColor(control,Color.Red)
其他
ChangeColor(控件,Color.Blue)
结束如果
但我收到错误:
运算符''=''没有定义类型''System.Drawing.Color''和
''System.Drawing.Color'' 。
>I have a Windows form where I am trying to set the BackColor of a control
and check the color before I do it:
If control.BackColor = System.Drawing.Color.Blue Then
ChangeColor(control, Color.Red)
Else
ChangeColor(control, Color.Blue)
End If
But I get an error:
Operator ''='' is not defined for types ''System.Drawing.Color'' and
''System.Drawing.Color''.
除了其他回复:我假设你使用的是VB.NET 2002/2003。
那些版本还不支持运算符超载。使用VB 2005,上面的
代码将编译,因为VB 2005支持运算符重载和
''Color''重载''=''(比较)运算符。 br />
-
MS Herfried K. Wagner
MVP< URL:http://dotnet.mvps.org/> ;
VB< URL:http://dotnet.mvps.org/dotnet/faqs/>
In addition to the other replies: I assume you are using VB.NET 2002/2003.
Those versions do not yet support operator overloading. With VB 2005, the
code above would compile because VB 2005 supports operator overloading and
''Color'' overloads the ''='' (comparison) operator.
--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://dotnet.mvps.org/dotnet/faqs/>
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