我是 wpf 的新手,我试图制作一些 showdialog 窗口的验证文本框。我已经对空的 dield 和空格进行了验证,但我需要为大于我传递给对话框但不知道如何将其用于 ValidationRule 类的最大值的数字添加验证。
这是我的 ValidationRule 类:
public class CustomValidationRule : ValidationRule
{
public int kMax
{
get { return kMax; }
set { kMax = value; }
}
public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
if (string.IsNullOrEmpty(value.ToString()))
return new ValidationResult(false, "No number was entered!");
if (value.ToString().Contains(' '))
return new ValidationResult(false, string.Format("No spaces allowed!" );
try
{
int num = Convert.ToInt32(value);
if (num == 0 || num > kMax)
return new ValidationResult(false, string.Format("Number must be in range of (0,{0})", kMax));
}
catch (FormatException fe)
{
return new ValidationResult(false, fe.Message);
}
return ValidationResult.ValidResult;
}
}
这是我的窗口代码:
public partial class kInputWindow : Window
{
public string ResultText { get; set; }
public int kMax { get; set; }
public kInputWindow(string question,int kMax)
{
InitializeComponent();
lblQuestion.Content = question;
this.DataContext = this;
this.kMax = kMax;
}
private void btnDialogOk_Click(object sender, RoutedEventArgs e)
{
this.DialogResult = true;
}
public string Answer
{
get { return txtAnswer.Text; }
}
private void NumberValidationTextBox(object sender, TextCompositionEventArgs e)
{
Regex regex = new Regex("[^0-9]+");
e.Handled = regex.IsMatch(e.Text);
}
}
当我在主窗口创建对话框时,我这样做:
kInputWindow kInput = new kInputWindow(question, lines);
kInput.ShowDialog();
现在 kinput 得到了我需要的值,但我不知道如何将它传递给我的 ValidationRule 类