Question

感谢您查看此帖子。我只是C＃和WPF的初学者，我的小项目正在迅速变成一团糟。我有一个我为调度目的而制作的WPF表单。目前我正在尝试清理一些拼凑在一起的代码。它有点像我想要的方式，但它还没有完全存在。我有一个组合框，文本框，日期和时间选择器的混合，一些控件被隐藏，直到选择否则。我目前所处的是单击按钮控件，它最终会将数据推送到我需要的位置。我想点击按钮初始化的是：

查看所有控件，找到当前可见的控件。在可见控件中，检查它们是否为空/空。如果控件为空/空，请突出显示该字段并显示一条消息，指出“缺少必需数据”。

我在网上浏览了一下，我觉得循环使用这些将是一个非常优越的方法，但是，我普遍缺乏理解使我无法完成这项工作。正如我之前提到的，我有各种控件类型，其中一些来自Xceed WPF工具包。

以下是我提出的建议：

private void Submit_BT_Click(object sender, RoutedEventArgs e)
    {
        if (string.IsNullOrEmpty(PatientName.Text))
        {
            PatientName.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            PatientName.Background = System.Windows.Media.Brushes.White;
        }

        if (string.IsNullOrEmpty(MRN.Text))
        {
            MRN.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            MRN.Background = System.Windows.Media.Brushes.White;
        }

        if (string.IsNullOrEmpty(Procedure.Text))
        {
            Procedure.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            Procedure.Background = System.Windows.Media.Brushes.White;
        }

        if (string.IsNullOrEmpty(Levels.Text))
        {
            Levels.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            Levels.Background = System.Windows.Media.Brushes.White;
        }

        if (string.IsNullOrEmpty(Modality_Select.Text))
        {
            Modality_Select.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            Modality_Select.Background = System.Windows.Media.Brushes.White;
        }

        if (string.IsNullOrEmpty(Insurance.Text))
        {
            Insurance.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            Insurance.Background = System.Windows.Media.Brushes.White;
        }

        if (string.IsNullOrEmpty(Sched.Text))
        {
            Sched.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            Sched.Background = System.Windows.Media.Brushes.White;
        }

        if (string.IsNullOrEmpty(OR_Num.Text))
        {
            OR_Num.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            OR_Num.Background = System.Windows.Media.Brushes.White;
        }

        if (string.IsNullOrEmpty(Sched_Date.Text))
        {
            Sched_Date.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            Sched_Date.Background = System.Windows.Media.Brushes.White;
        }


        if (Start_Time.Value == null)
        {
            Start_Time.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            Start_Time.Background = System.Windows.Media.Brushes.White;
        }

        if (string.IsNullOrEmpty(Combobox1.Text))
        {
            Combobox1.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            Combobox1.Background = System.Windows.Media.Brushes.White;
        }

        if (End_Time.Value == null)
        {
            End_Time.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            End_Time.Background = System.Windows.Media.Brushes.White;
        }

        if (string.IsNullOrEmpty(Combobox2.Text))
        {
            Combobox2.Background = System.Windows.Media.Brushes.LightPink;
            System.Windows.Forms.MessageBox.Show("You are missing required data");
        }
        else
        {
            Combobox2.Background = System.Windows.Media.Brushes.White;
        }

        if (EMG_Type.IsVisible)
        {
            if (string.IsNullOrEmpty(EMG_Type.Text))
            {
                EMG_Type.Background = System.Windows.Media.Brushes.LightPink;
                System.Windows.Forms.MessageBox.Show("You are missing required data");
            }
            else
            {
                EMG_Type.Background = System.Windows.Media.Brushes.White;
            }

            if (Other_TB.IsVisible)
            {
                if (string.IsNullOrEmpty(Other_TB.Text))
                {
                    Other_TB.Background = System.Windows.Media.Brushes.LightPink;
                    System.Windows.Forms.MessageBox.Show("You are missing required data");
                }
                else
                {
                    Other_TB.Background = System.Windows.Media.Brushes.White;
                }
            }
        }

如何通过循环控件来实现此功能，如果适用，仅显示1条错误消息，但突出显示每个空/空控件？

感谢您提供的任何帮助。

帕特里克

Answer 1

嗨，我个人不支持这种类型的WPF验证方法，在WPF中我们可以通过使用IDataErrorInfo来实现。

    public string Error
    {
       get
          {
               return null;
          }
    }


    public string this[string name]
    {
        ValidateProperty(name);
    }

public override void ValidateProperty(string propertyName)
    {
        Tracer.LogValidation("INotifyDataErrorInfo.ValidateProperty called. Validating " + propertyName);
        switch (propertyName)
        {
            case "x":
                {
                    ValidateNonNegative(x, "x");
                    ValidateMandatory(x, "x");
                }
            break;

        case "y":
            {
                ValidateNonNegative(y, "y");
                ValidateMandatory(y, "y");
            }
            break;
    }
    if (String.IsNullOrEmpty(propertyName))
    {
        Tracer.LogValidation("No cross-property validation errors.");
    }
  }

Validation-in-WPF

Validation-in-Windows-Presentation-Foundation

data-validation-in-3-5

如何在按钮点击

1 个答案: