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

View/ParameterSetView.xaml

@@ -6,7 +6,7 @@
              xmlns:local="clr-namespace:DyeingComputer.View"
              xmlns:lang="clr-namespace:DyeingComputer.Properties" 
              xmlns:localUserClass="clr-namespace:DyeingComputer.UserClass"
-             mc:Ignorable="d" 
+             mc:Ignorable="d" Loaded="UserControl_Loaded"
              d:DesignHeight="630" d:DesignWidth="1280" VerticalAlignment="Top">
     <Grid>
         <DataGrid x:Name="Grid" AlternationCount="2" Margin="0,0,0,0" d:ItemsSource="{d:SampleData ItemCount=99}" AutoGenerateColumns="False" 
@@ -14,8 +14,7 @@
                 BorderThickness="1,1,1,1" ColumnHeaderHeight="40" HorizontalContentAlignment="Right" Grid.ColumnSpan="2" AllowDrop="False"      
                 CanUserReorderColumns="False" CanUserSortColumns="False" CanUserResizeRows="False" CanUserResizeColumns="False"
                 CanUserAddRows="False" CanUserDeleteRows="False" HeadersVisibility ="Column" InputMethod.IsInputMethodEnabled ="False"   
-                CellEditEnding="Grid_CellEditEnding"
-                Background="White" SelectionMode="Single" FontSize="15" Cursor="AppStarting" >
+                CellEditEnding="Grid_CellEditEnding" Background="White" SelectionMode="Single" FontSize="15" Cursor="AppStarting" >
             <DataGrid.RowStyle >
                 <Style TargetType="{x:Type DataGridRow}">
                     <Setter Property="Height" Value="30" />

View/ParameterSetView.xaml.cs

@@ -32,12 +32,6 @@ namespace DyeingComputer.View
         {
             InitializeComponent();
             set_sql();
-
-            
-            //Grid.Focus();
-            Grid.SelectedIndex = 0;
-           // var row = Grid.ItemContainerGenerator.ContainerFromIndex(0) as FrameworkElement;
-            //if (row != null ) {row.Focus(); }
         }
 
         private SQLiteHelper SQLiteHelpers = null;  //定义数据库
@@ -65,16 +59,44 @@ namespace DyeingComputer.View
 
             int rownum = Grid.SelectedIndex;//获取鼠标选中行并定义变量
             if (rownum != -1)//判断鼠标定位是否有效
-            {           
+            {
                 ID = (Grid.Columns[1].GetCellContent(Grid.Items[rownum]) as TextBlock).Text;//定位第0列，
 
                 Dictionary<string, object> datagrid_v = new Dictionary<string, object>();//缓存函数
                 datagrid_v.Add("Value", newValue);
                 SQLiteHelpers = new SQLiteHelper(DBAddress); //数据库连接路径
                 SQLiteHelpers.Open();  //打开数据库
-                SQLiteHelpers.Update("Parameters",datagrid_v , "ParameterID ='"+ ID + "'", null);//更新
+                SQLiteHelpers.Update("Parameters", datagrid_v, "ParameterID ='" + ID + "'", null);//更新
                 SQLiteHelpers.Close();//关闭数据库
             }
         }
+
+        private void UserControl_Loaded(object sender, RoutedEventArgs e)//打开页面时的操作
+        {
+            DataGridRow dr = (DataGridRow)Grid.ItemContainerGenerator.ContainerFromIndex(0);//取第0行单元格 
+            DataGridCellsPresenter presenter = GetVisualChild<DataGridCellsPresenter>(dr);
+            DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(3); //取第3列每行单元格 
+            cell.Focus();
+            Grid.SelectedIndex = 0;
+        }
+        public static T GetVisualChild<T>(Visual parent) where T : Visual
+        {
+            T child = default(T);
+            int numVisuals = VisualTreeHelper.GetChildrenCount(parent);
+            for (int i = 0; i < numVisuals; i++)
+            {
+                Visual v = (Visual)VisualTreeHelper.GetChild(parent, i);
+                child = v as T;
+                if (child == null)
+                {
+                    child = GetVisualChild<T>(v);
+                }
+                if (child != null)
+                {
+                    break;
+                }
+            }
+            return child;
+        }
     }
 }