如何在点击按钮时搜索各种表单控件的完整性

Question

感谢您浏览这篇文章。我只是一个C#和WPF的初学者，我的小项目正在迅速变得一团糟。我有一个WPF表单，我正在制作用于日程安排的表单。目前，我正在尝试清理我拼凑起来的一些代码。它的工作方式有点像我想要的，但还没有完全实现。我有一个组合框，文本框，日期和时间选择器的混合，一些控件是隐藏的，直到选择另有说明。我当前所在的位置是click按钮控件，它最终会将数据推送到我需要的位置。我想让单击按钮最初做的是：

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/null。如果控件为空/null，则突出显示该字段并显示一条消息，指出“缺少必需的数据”。

我在网上看了看，我觉得循环浏览这些内容是一种更好的方式，然而，我普遍缺乏理解，这让我无法完成这项工作。正如我前面提到的，我有多种控件类型，其中一些来自Xceed WPF工具包。

这是我想出来的：

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;
                }
            }
        }

我如何通过循环遍历控件，只显示一条错误消息，同时高亮显示每个空/空的控件来使其工作？

感谢您对我的帮助。

帕特里克

Answer 1

嗨，我个人不支持在WPF中验证这种类型的方法，在WPF中我们可以使用IDataErrorInfo来做这件事。

    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