即使行具有错误验证规则，也继续添加或编辑数据网格行 [英] Continue adding or editing datagrid row even if row has error validation rule

问题描述

我希望datagrid继续添加或编辑DataGrid行，即使行有错误验证规则



这是样本以澄清想法

I want datagrid to continue Adding or Editing DataGrid row even if row has error validation rule

this is sample in order to clarify the idea

<DataGrid Name="Dgrid"  AutoGenerateColumns="False" ItemsSource="{Binding Request.Obligations}" CanUserAddRows="True">


            <DataGrid.Columns>

                <DataGridTextColumn Binding="{Binding Id}" />
                <DataGridTextColumn Binding="{Binding Name}"/>
        <DataGridTextColumn Binding="{Binding Age}"/>

           </DataGrid.Columns>


            <DataGrid.RowValidationRules>
                <validationRules:ٌRowValidationRule ValidatesOnTargetUpdated="True" ValidationStep="UpdatedValue"  />
            </DataGrid.RowValidationRules>

            <DataGrid.RowValidationErrorTemplate>
                <ControlTemplate>
                    <!--<Grid Margin="0,-2,0,-2"
            ToolTip="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridRow}},Path=(Validation.Errors)[0].ErrorContent}">-->
                    <Grid Margin="0,-2,0,-2">
                        <Grid.ToolTip>
                            <MultiBinding Converter="{StaticResource DataGridRowMultiConverter}">
                                <Binding Path="(Validation.Errors)[0].ErrorContent"
                                         RelativeSource="{RelativeSource Mode=FindAncestor,
                                                AncestorType=DataGridRow}" />
                                <Binding Path="DataContext"
                                         RelativeSource="{RelativeSource Mode=FindAncestor,
                                                AncestorType=Window}" />
                            </MultiBinding>
                        </Grid.ToolTip>
                        <Ellipse StrokeThickness="0" Fill="Red" Width="{TemplateBinding FontSize}"
                                 Height="{TemplateBinding FontSize}" />
                        <TextBlock Text="!" FontSize="{TemplateBinding FontSize}" FontWeight="Bold" Foreground="White"
                                   HorizontalAlignment="Center" />
                    </Grid>
                </ControlTemplate>
            </DataGrid.RowValidationErrorTemplate>

        </DataGrid>

如果用户输入了包含无效数据的新行，他将无法添加新行新行将丢失，现有数据无法编辑。



简而言之，我想停止RowValidationRules的行为并使其jop告诉用户他已输入无效数据而没有阻止他。



搜索后我发现此代码：

If a user entered a new row with invalid data, he will not be able to add a new row and the new row will be missing and the existing data can not be edited.

In short, I want to stop the behavior of RowValidationRules and make its jop to tell the user that he has entered invalid data without stoping him.

After search i found this code:

protected override void OnCanExecuteBeginEdit(System.Windows.Input.CanExecuteRoutedEventArgs e)
        {
            var hasCellValidationError = false;
            var hasRowValidationError = false;
            const BindingFlags bindingFlags =
                BindingFlags.FlattenHierarchy | BindingFlags.NonPublic | BindingFlags.Instance;
            var cellError = this.GetType().BaseType.GetProperty("HasCellValidationError", bindingFlags);
            var rowError = this.GetType().BaseType.GetProperty("HasRowValidationError", bindingFlags);

            if (cellError != null)
                hasCellValidationError = (bool)cellError.GetValue(this, null);
            if (rowError != null)
                hasRowValidationError = (bool)rowError.GetValue(this, null);

            base.OnCanExecuteBeginEdit(e);
            if ((!e.CanExecute && hasCellValidationError) || (!e.CanExecute && hasRowValidationError))
            {
                e.CanExecute = true;
                e.Handled = true;
            }
        }

但我发现我可以编辑行但无法添加更多行



我尝试过：



继续添加或编辑DataGrid行，即使行有错误验证规则

but I found that I can edit rows but can't add more rows

What I have tried:

continue Adding or Editing DataGrid row even if row has error validation rule

推荐答案

Quote：

继续添加或编辑datagrid行，即使行有错误验证规则

Continue adding or editing datagrid row even if row has error validation rule

如果你不想要尊重它，为什么还需要验证规则呢？



最简单的解决方案是不是验证规则。

Why do you want a validation rules if you don't want to have to respect it ?

The easiest solution is not validation rule.

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