public void ScrollIntoView(Object item, DataGridColumn column)
点击展开示例代码
namespace SilverlightDemoApp ...{ public delegate void MouseWheelEventHandler(object sender, MouseWheelHandlerEventArgs e); public class MouseWheelHandlerEventArgs : EventArgs 
...{ double delta; public MouseWheelHandlerEventArgs() : this(0) ...{ } public MouseWheelHandlerEventArgs(double delta) ...{ this.delta = delta; 
} public double Delta ...{ get { return delta; } } } internal static class MouseHelper ...{ static List<MouseWheelEventHandler> wheelHandler = new List<MouseWheelEventHandler>(); public static void SetMouseWheelHandler(MouseWheelEventHandler _wheelHandler) ...{ wheelHandler.Add(_wheelHandler); if (HtmlPage.IsEnabled && HtmlPage.Window != null) ...{ HtmlPage.Window.AttachEvent("DOMMouseScroll", OnMouseWheelTurned); HtmlPage.Window.AttachEvent("onmousewheel", OnMouseWheelTurned); HtmlPage.Document.AttachEvent("onmousewheel", OnMouseWheelTurned); } } static void OnMouseWheelTurned(Object sender, HtmlEventArgs args) ...{ double delta = 0; ScriptObject eventObj = args.EventObject; if (eventObj.GetProperty("wheelDelta") != null) ...{ delta = ((double)eventObj.GetProperty("wheelDelta")) / 120; if (HtmlPage.Window.GetProperty("opera") != null) delta = -delta; } else if (eventObj.GetProperty("detail") != null) ...{ delta = -((double)eventObj.GetProperty("detail")) / 3; if (HtmlPage.BrowserInformation.UserAgent.IndexOf("Macintosh") != -1) delta = delta * 3; } if (delta != 0) ...{ args.PreventDefault(); eventObj.SetProperty("returnValue", false); } foreach (MouseWheelEventHandler handler in wheelHandler) ...{ handler(null, new MouseWheelHandlerEventArgs(delta)); } } } 
} 点击展开示例代码public partial class NorthWind : UserControl ...{ //DataGrid的数据 private List<Products> _product; //标示数据是否在DataGrid上 private bool IsMouseInControl ...{ get; set; } public NorthWind() ...{ InitializeComponent(); //处理MouseWheel MouseHelper.SetMouseWheelHandler(OnMouseWheel); BindGrid(); } private void BindGrid() ...{ //DataGrid 绑定数据 //从WCF中获取Products数据，并保存到_product中。 //以下代码省略 } public void OnMouseWheel(object sender, MouseWheelHandlerEventArgs args) ...{ //如果鼠标不在DataGrid上，就不做处理 if (!IsMouseInControl) return; int mouseDelta = Math.Sign(args.Delta); var selectedItem = dgData.SelectedIndex; //每次向下滚动一条记录 var nextRow = selectedItem - (int)mouseDelta * 1; if (nextRow > -1 && nextRow < _product.Count) ...{ dgData.ScrollIntoView(_product[nextRow], null); dgData.SelectedIndex = nextRow; } } private void dgData_MouseEnter(object sender, MouseEventArgs e) ...{ //鼠标进入DataGrid IsMouseInControl = true; } private void dgData_MouseLeave(object sender, MouseEventArgs e) ...{ //鼠标离开DataGrid IsMouseInControl = false; } }OK,这样就完工了,希望对你有所帮助!
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