c# - 如果未选中 DataGridColumn/Row 中的任何复选框，则显示 MessageBox

Question

我在 C# WPF 中有一个程序，在该程序中我有三个不同的列。我们将这些列称为 A、B 和 C。现在我希望我的程序显示一个带有警告的 MessageBox 如果 ANY 中的 Checkbox如果选中了 A 和 C 列，则 B 列未选中。

如果我在这 3 列的当前行上勾选，我设法得到警告 MessageBox。例如，选中 A，未选中 B，选中 C，因此当我单击提交时，应该会弹出一个 MessageBox。

假设我从 A 行开始，选中 A 列，未选中 B，选中 C。然后我继续 B 行并将所有列设置为选中并点击提交，它应该弹出一个 MessageBox 声称 A 行在 B 列中有一个未选中的框。到目前为止，我还不知道如何进行这项工作。

这是复选框的快照，上面有清晰的图片:

[![快照][1]][1]

如您所见，ADCL 已选中所有行，当我点击提交时，它不会显示消息框，因为 ADCP 在第二列中有一个未选中的框。

这是我的部分代码，仅适用于当前行:

  if (e.ColumnIndex == this.dataGridLocationDetails.Columns["ColIssuePermission"].Index) {
    if (Convert.ToBoolean(dataGridLocationDetails.CurrentRow.Cells["ColIssuePermission"].Value) == false)
                    {
                        DialogResult dialogResult = MessageBox.Show("Issue Permission is unchecked. Do you wish to continue? ", "WARNING", MessageBoxButtons.YesNo);
                        if (dialogResult == DialogResult.Yes)
                        {

                        }
                        else if (dialogResult == DialogResult.No)
                        {
                            return;
                        }
                    }
}

更新:

   for (int i = 0; i < this.dataGridLocationDetails.Rows.Count; i++)
                {
                    if (((Convert.ToBoolean(dataGridLocationDetails.Rows[i].Cells["colViewPermission"].Value) == true)
                       && (Convert.ToBoolean(dataGridLocationDetails.Rows[i].Cells["colIssuePermission"].Value) == false)
                     ))
                    {
                        if (Convert.ToBoolean(dataGridLocationDetails.CurrentRow.Cells["ColIssuePermission"].Value) == false)
                        {
                            DialogResult dialogResult = MessageBox.Show("The following Location ID has view permission but not issue permission:(LIST OUT LOCATION HERE)    Do you wish to continue? ", "WARNING", MessageBoxButtons.YesNo);
                            if (dialogResult == DialogResult.Yes)
                            {

                            }
                            else if (dialogResult == DialogResult.No)
                            {
                                return;
                            }

                        }


                    }

Answer 1

请查找详细答案:创建了一个示例应用程序。请在此处找到 MainWindow.xaml.cs 的代码。构造函数:

public MainWindow()
    {
        InitializeComponent();
        this.DataContext = this;
        entities = new List<SampleEntity>()
        {
            new SampleEntity() { Id = 1, Description = "Test 1", IsViewPermission = true, IsIssuePermission = true, IsActive = true },
            new SampleEntity() { Id = 2, Description = "Test 2", IsViewPermission = true, IsIssuePermission = true, IsActive = true },
            new SampleEntity() { Id = 3, Description = "Test 3", IsViewPermission = true, IsIssuePermission = true, IsActive = true },
            new SampleEntity() { Id = 4, Description = "Test 4", IsViewPermission = true, IsIssuePermission = true, IsActive = true },
            new SampleEntity() { Id = 5, Description = "Test 5", IsViewPermission = true, IsIssuePermission = true, IsActive = true },
            new SampleEntity() { Id = 6, Description = "Test 6", IsViewPermission = true, IsIssuePermission = true, IsActive = true },
            new SampleEntity() { Id = 7, Description = "Test 7", IsViewPermission = true, IsIssuePermission = true, IsActive = true },
            new SampleEntity() { Id = 8, Description = "Test 8", IsViewPermission = true, IsIssuePermission = true, IsActive = true }
        };
        dgMainGrid.ItemsSource = entities;
        tempEntities = new List<SampleEntity>();
        entities.ForEach(item => 
        {
            SampleEntity newEntity = new SampleEntity()
            {
                Id = item.Id,
                Description = item.Description,
                IsViewPermission = item.IsViewPermission,
                IsIssuePermission = item.IsIssuePermission,
                IsActive = item.IsActive
            };
            tempEntities.Add(newEntity);
        });                
    }

如您所见，我已将数据网格的项目源设置为实体。因此，我正在创建一个新的 tempEntities 列表，它将保存实体的副本但不会更改。您可以使用 ICloneable 接口(interface)并在 Clone 方法中实现相同的接口(interface)。单击提交按钮:

private void Button_Click(object sender, RoutedEventArgs e)
    {
        string editedIds = string.Empty;
        foreach(SampleEntity temp in tempEntities)
        {
            if(temp.IsViewPermission && temp.IsIssuePermission && temp.IsActive)
            {
                SampleEntity entity = entities.Single(item => item.Id == temp.Id);
                if (entity.IsIssuePermission == false)
                {
                    editedIds += entity.Id + ", ";
                }
            }
        }            
        string message = string.Format("Issue Permission(s): {0} have been unchecked. Do you wish to continue?", editedIds);
        MessageBoxResult dialogResult = MessageBox.Show(message, "WARNING", MessageBoxButton.YesNo);
        if (dialogResult == MessageBoxResult.Yes)
        {
        }
        else if (dialogResult == MessageBoxResult.No)
        {
            return;
        }
    }

它只是检查绑定(bind)到数据网格的实体是否已更改，方法是将它们与保存原始值的临时实体进行比较。 Id 是我的主键，你用你的。每次保存更改时，也请更新您的 tempEntities。

添加 xaml:

<Window x:Class="WPF_StackOverflow.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WPF_StackOverflow"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525">
<Window.Resources>
</Window.Resources>
<Grid x:Name="MainGrid">
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="*"/>
    </Grid.RowDefinitions>
    <DataGrid x:Name="dgMainGrid">
        <DataGrid.Columns>
            <DataGridTextColumn Header="Location ID" Binding="{Binding Path=Id, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
            <DataGridTextColumn Header="Location Descriptioon" Binding="{Binding Path=Description, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
            <DataGridCheckBoxColumn Header="View Permission" Binding="{Binding Path=IsViewPermission, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
            <DataGridCheckBoxColumn Header="Issue Permission" Binding="{Binding Path=IsIssuePermission, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
            <DataGridCheckBoxColumn Header="Active" Binding="{Binding Path=IsActive, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
        </DataGrid.Columns>
    </DataGrid>
    <Button Grid.Row="1" Content="Submit" Click="Button_Click"/>
</Grid>