如何使用Datagrid处理Dataerror事件并使用Wpf？我这样做是因为我将它从窗体转换为Wpf。 [英] How Do I Handle A Dataerror Event With Datagrid And I Am Using Wpf? I Am Doing This Because I'm Converting It From Window Forms To Wpf.

问题描述

我实际上想要DataGridViewDataErrorEventArgs和DataGridDataErrorContexts的wpf等价物....

I actually want the wpf equivalent for DataGridViewDataErrorEventArgs and DataGridDataErrorContexts....

private void HandleDataError(object sender, DataGridDataErrorEventArgs e)
       {
           System.Windows.Controls.DataGrid dg = (System.Windows.Controls.DataGrid)sender;
           DataGridColumn dc = dg.Columns[e.ColumnIndex];
           if ((e.Context & DataGridDataErrorContexts.Parsing) == DataGridDataErrorContexts.Parsing)
           {
               if (dc.ValueType == typeof(Int32))
               {
                   System.Windows.MessageBox.Show(this, "Invalid number for " + dc.HeaderText, "Input error", MessageBoxButton.OK, MessageBoxImage.Warning);
               }
               else
               {
                   System.Windows.MessageBox.Show(this, "Invalid format for " + dc.HeaderText, "Input error", MessageBoxButton.OK, MessageBoxImage.Warning);
               }
           }
           //else if ((e.Context & DataGridViewDataErrorContexts.Commit) == DataGridViewDataErrorContexts.Commit)
           //{
           //    MessageBox.Show(this, "You must enter a value for " + dc.HeaderText, "Input error", MessageBoxButtons.OK, MessageBoxIcon.Warning);
           //    return;
           //}
           else
               System.Windows.MessageBox.Show(this, e.Exception.Message, "Input error", MessageBoxButton.OK, MessageBoxImage.Warning);
       }

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