DevExpress GridView 鼠标悬停颜色追踪（行或单元格）

2019年07月12日 15:17:02 涛神-Dev 阅读数 41 标签： GridView行追踪单元格追踪 更多

个人分类： DevExpressWinformGridControl

view.RefreshData()

如何将GridView做成类似网页的列表那样，鼠标移动的是行背景颜色跟着变，也就是所为的鼠标悬停追踪，

效果如下：

代码如下：

public class ViewStyleHelper{bool enable;public bool Enable{get { return enable; }set{enable = value;UnRegisterEvent();if (enable){RegisterEvent();} else {View.RefreshData();}}}bool byRow;/// <summary>
/// 真为行，假为单元格
/// </summary>
public bool ByRow{get { return byRow; }set{byRow = value;UnRegisterEvent();if(enable)RegisterEvent();}}public DevExpress.XtraGrid.Views.Grid.GridView View { get; private set; }/// <summary>
/// 当前列
/// </summary>
GridColumn currentCol;/// <summary>
/// 当前行
/// </summary>
int currentRowHandle;public ViewStyleHelper(DevExpress.XtraGrid.Views.Grid.GridView view,bool byRow=true){View = view;this.byRow = byRow;Enable = true;view.MouseLeave += (s, e) =>{currentCol = null;currentRowHandle = int.MinValue;view.RefreshData();};
}void RegisterEvent(){
View.MouseMove += OnMouseMove;
if (!byRow)
View.RowCellStyle += OnRowCellStyle;
else
{
View.RowStyle += OnRowStyle;
}
}void UnRegisterEvent(){View.MouseMove -= OnMouseMove;View.RowCellStyle -= OnRowCellStyle;View.RowStyle -= OnRowStyle;
}private void OnMouseMove(object sender, MouseEventArgs e){var view = sender as DevExpress.XtraGrid.Views.Grid.GridView;var info = view.CalcHitInfo(e.Location);bool refresh = false;if (currentCol != info.Column || currentRowHandle != info.RowHandle){refresh = true;}if (info.InDataRow){currentCol = info.Column;currentRowHandle = info.RowHandle;}else{currentCol = null;currentRowHandle = int.MinValue;}if (refresh)view.RefreshData();}private void OnRowStyle(object sender, DevExpress.XtraGrid.Views.Grid.RowStyleEventArgs e){
if (e.RowHandle == currentRowHandle)
{
e.Appearance.BackColor = Color.FromArgb(108, 178, 235);
e.HighPriority = true;
}
}private void OnRowCellStyle(object sender, DevExpress.XtraGrid.Views.Grid.RowCellStyleEventArgs e){if (e.Column == currentCol && e.RowHandle == currentRowHandle){e.Appearance.BackColor = Color.FromArgb(108, 178, 235);}}
}

​​​​​调用代码：

ViewStyleHelper helper;private void Form1_Load(object sender, EventArgs e){helper = new ViewStyleHelper(gridView1);var dt = CreateDt();gridControl1.DataSource = dt;
}