在验证wpf中的多个文本框时遇到问题 [英] having issue in validation more than one textbox in wpf

问题描述

i尝试通过wpf中的i multivalueconverter验证多个文本框，我已将此文本框绑定到按钮的isenabled属性，如果有任何错误按钮应该被禁用。 />

$ b $我在班上遇到这种情况

Hi,
i am trying to validate more than one textbox through i multivalueconverter in wpf , i have binded this textbox to isenabled property of button , if there is any error button should get disabled.

i am having this condition in my class

public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
     {
         foreach (var isValid in values)
             if (isValid as bool? == false)
             {
                 return false;
             }
         return true;
     }

我已经通过验证规则类进行了验证，但我认为上述条件存在一些问题时间它只返回true.it dosent进入if condtion并返回false。

and i have done validation through validation rule class , but i think there is some issue with the above condition every time it return true only.it dosent get inside the if condtion and return false .

推荐答案

试试这个并告诉我结果。





公共对象转换（object []值，类型targetType，对象参数，CultureInfo文化）

{

foreach（var isValid in values）



if（isValid！= DependencyProperty.UnsetValue && isValid！= null）

{

if（isValid as bool？== false）

{

返回false;

}



}

返回true;

}

Try this one and tell me the outcome.


public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
foreach (var isValid in values)

if (isValid != DependencyProperty.UnsetValue && isValid !=null)
{
if (isValid as bool? == false)
{
return false;
}

}
return true;
}

i changed my loop to this and its working fine foreach (var isValid in values) if (isValid as ValidationError != null) { return false; } return true;

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