WPF Dialog Box/ ValidationRule 파일열기 유효성검사

 

참고 URL : http://msdn.microsoft.com/en-us/library/aa969773.aspx

 

별다른건 없고 그냥 Microsoft.Win32 네임스페이스 참조만 해주고 예전처럼 사용하면 됩니다.

 

 

Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.FileName = "Command"; // Default file name
dlg.DefaultExt = ".exe"; // Default file extension
dlg.Filter = "Text documents (.exe)|*.exe"; // Filter files by extension

// Show open file dialog box
Nullable<bool> result = dlg.ShowDialog();

// Process open file dialog box results
if (result == true)
{
    // Open document
    string filename = dlg.FileName;
}

 

WPF 컨트롤의 유효성을 검사할려면 규칙만들고 바인딩 연결(유효성 검사 규칙은 ValidationRule)

규칙만들고

using System.Globalization;
using System.Windows.Controls;

namespace SDKSample
{
    public class MarginValidationRule : ValidationRule
    {
        double minMargin;
        double maxMargin;

        public double MinMargin
        {
            get { return this.minMargin; }
            set { this.minMargin = value; }
        }

        public double MaxMargin
        {
            get { return this.maxMargin; }
            set { this.maxMargin = value; }
        }

        public override ValidationResult Validate(object value, CultureInfo cultureInfo)
        {
            double margin;

            // Is a number?
            if (!double.TryParse((string)value, out margin))
            {
                return new ValidationResult(false, "Not a number.");
            }

            // Is in range?
            if ((margin < this.minMargin) || (margin > this.maxMargin))
            {
                string msg = string.Format("Margin must be between {0} and {1}.", this.minMargin, this.maxMargin);
                return new ValidationResult(false, msg);
            }

            // Number is valid
            return new ValidationResult(true, null);
        }
    }
}

 

컨트롤에 연결하고

using System.Windows; // Window, RoutedEventArgs, IInputElement, DependencyObject
using System.Windows.Controls; // Validation
using System.Windows.Input; // Keyboard

namespace SDKSample
{
    public partial class MarginsDialogBox : Window
    {


...


void okButton_Click(object sender, RoutedEventArgs e)
{
    // Don't accept the dialog box if there is invalid data
    if (!IsValid(this)) return;


...


        }

        // Validate all dependency objects in a window
        bool IsValid(DependencyObject node)
        {
            // Check if dependency object was passed
            if (node != null)
            {
                // Check if dependency object is valid.
                // NOTE: Validation.GetHasError works for controls that have validation rules attached 
                bool isValid = !Validation.GetHasError(node);
                if (!isValid)
                {
                    // If the dependency object is invalid, and it can receive the focus,
                    // set the focus
                    if (node is IInputElement) Keyboard.Focus((IInputElement)node);
                    return false;
                }
            }

            // If this dependency object is valid, check all child dependency objects
            foreach (object subnode in LogicalTreeHelper.GetChildren(node))
            {
                if (subnode is DependencyObject)
                {   
                    // If a child dependency object is invalid, return false immediately,
                    // otherwise keep checking
                    if (IsValid((DependencyObject)subnode) == false) return false;
                }
            }

            // All dependency objects are valid
            return true;
        }
    }
}

 

아 너무 귀찮다 ㅋ 그냥 if( this.text ==””){  } 이런씩으로 올드하게 하면 안되나? ㅎ