Merge branch 'master' of http://www.scserverddns.top:13000/sc/DyeingComputer

UserClass/NumericTextColumn .cs

@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Controls;
+using System.Windows.Input;
+using System.Windows;
+
+namespace DyeingComputer.UserClass
+{
+    /// <summary>
+    /// DataGrid中只能输入数字的列
+    /// </summary>
+    /// local:DataGridNumericColumn Binding = "{Binding NumericProperty}" 
+    ///
+    public class NumericTextColumn : DataGridTextColumn
+    {
+        protected override object PrepareCellForEdit(FrameworkElement editingElement, RoutedEventArgs editingEventArgs)
+        {
+            var edit = editingElement as TextBox;
+            edit.PreviewTextInput += Edit_PreviewTextInput;
+            DataObject.AddPastingHandler(edit, OnPaste);
+            //限制输入法切换，可避免中文输入添加到列中
+            InputMethod.SetIsInputMethodEnabled(edit, false);
+            return base.PrepareCellForEdit(editingElement, editingEventArgs);
+        }
+
+        private void OnPaste(object sender, DataObjectPastingEventArgs e)
+        {
+            var data = e.SourceDataObject.GetData(DataFormats.Text);
+            if (!IsDataValid(data)) e.CancelCommand();
+        }
+
+        private void Edit_PreviewTextInput(object sender, TextCompositionEventArgs e)
+        {
+            e.Handled = !IsDataValid(e.Text);
+        }
+
+        bool IsDataValid(object data)
+        {
+            try
+            {
+                Convert.ToInt32(data);
+                return true;
+            }
+            catch
+            {
+                return false;
+            }
+        }
+    }
+}