WPF中多源控制Button的状态-白红宇

需求描述

按钮的状态需要根据多个数据源的内容作出不同的组合判断

每个数据源的判断规则可定制

注：以下功能感觉只是简单粗暴的实现，如果您了解更优雅的解决方案，烦请告诉我下，感谢先！

按钮XAML

MultiConverter判断

public class InvalidMultiValidationRuleToBooleanMultiConverter : IMultiValueConverter  {    #region IMultiValueConverter Members    public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)    {      string[] paramlist = ((string)parameter).Split('|');      if (paramlist == null || paramlist.Length <= 0)      {        throw new ArgumentNullException("parameter");      }      int length = paramlist.Length;      IList
     
       boollist = new List
      
       ();      for (int i = 0; i < paramlist.Length; i++)      {        switch (paramlist[i].ToLowerInvariant())        {          case "checknameexisted":            boollist.Add(ValidationRuleHelper.Validate
       
        (values[i]));            break;          case "directoryandfileexist":            boollist.Add(ValidationRuleHelper.Validate
        
         (values[i]));            break;          case "greaterthanzerointeger":            boollist.Add(ValidationRuleHelper.Validate
         
          (values[i]));            break;          case "numericnull":            boollist.Add(ValidationRuleHelper.Validate
          
           (values[i])); break; case "stringlength": boollist.Add(ValidationRuleHelper.Validate
           
            (values[i])); break; case "stringnullorempty": boollist.Add(ValidationRuleHelper.Validate
            
             (values[i])); break; case "ipaddress": boollist.Add(ValidationRuleHelper.Validate
             
              (values[i])); break; case "objectnull": default: boollist.Add(ValidationRuleHelper.Validate
              
               (values[i])); break; } } bool result = boollist[0]; for (int i = 1; i < boollist.Count; i++) { result = result & boollist[i]; } return result; } public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture) { return null; } #endregion }