How to stop the gridspliter when the height or width reach the thresholds

1. Declare three private fields

private double scrollChange;private double widthThreshold = 100;private double heightThreshold = 100;

 

2. Add the events for gridspliter

<GridSplitter Grid.Column="1" Margin="0,7,0,0"  Name="gridSplitterColumn" Style="{StaticResource gridSplitterStyleForResizeColumns}" DragDelta="gridSplitter_DragDelta" DragCompleted="gridSplitter_DragCompleted"  PreviewMouseMove="gridSplitter_PreviewMouseMove" /><GridSplitter Grid.Row="1"   Name="gridSplitterForRow" Style="{StaticResource gridSplitterStyleForResizeRows}" HorizontalAlignment="Stretch" Height="7" DragDelta="gridSplitter_DragDelta" DragCompleted="gridSplitter_DragCompleted"  PreviewMouseMove="gridSplitter_PreviewMouseMove" />

 

For how to define the style for gridSplitterStyleForResizeColumns and gridSplitterStyleForResizeRows, please refrence this articlehttp://blog.csdn.net/farawayplace613/article/details/7101587

 

3. Handle the events gridSplitter_DragDelta, gridSplitter_DragCompleted, gridSplitter_PreviewMouseMove

    private void gridSplitter_DragDelta(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)        {              if (sender.Equals(this.gridSplitterForRow))            {                this.scrollChange= e.VerticalChange;            }            else if (sender.Equals(this.gridSplitterColumn))            {                this.scrollChange= e.HorizontalChange;            }        }

 

  private void gridSplitter_DragCompleted(object sender, System.Windows.Controls.Primitives.DragCompletedEventArgs e)        {            this.scrollChange = 0;        }

 

 private void gridSplitter_PreviewMouseMove(object sender, MouseEventArgs e)        {            if (Math.Abs(this.verticalChange) > 0.1)            {                if (sender.Equals(this.gridSplitterForRow))                {                    if (this.someRow.ActualHeight <= heightThreshold && this.scrollChange  < 0)                    {                        e.Handled = true;                    }                    if (this.anotherRow.ActualHeight <= heightThreshold && this.scrollChange  > 0)                    {                        e.Handled = true;                    }                }                else if (sender.Equals(this.gridSplitterColumn))                {                    if (this.someColumn.ActualWidth <= widthThreshold && this.scrollChange  < 0)                    {                        e.Handled = true;                    }                    if (this.anotherColumn.ActualWidth <= widthThreshold && this.scrollChange  > 0)                    {                        e.Handled = true;                    }                }            }        }