Dev+Grid复选框

Posted 2021-12-02 stonewl

public class GridControlHelp
{

/// <summary>
/// 是否选中
/// </summary>
private static bool chkState = false;
//复选框列名称
private static string chkFileName = "";
//复选框列宽
private static int chkWidth = 30;
//GridView
public static DevExpress.XtraGrid.Views.Grid.GridView GView = null;

private DevExpress.XtraGrid.Views.Grid.GridView gView
{
get
{
if (GView == null)
{
GView = new DevExpress.XtraGrid.Views.Grid.GridView();
}
return GView;
}
set
{
this.gView = value;
}
}

public static void GridCheckEdit(DevExpress.XtraGrid.Views.Grid.GridView gv, string checkFileName, int checkWidth)
{
if (gv != null)
{
chkFileName = checkFileName;
chkWidth = checkWidth;
GView = gv;
//不显示复选框的列标题
gv.Columns[chkFileName].OptionsColumn.ShowCaption = false;

//复选框的形状 gv.Columns[chkFileName].ColumnEdit 实例是 repositoryItemCheckEdit1
//repositoryItemCheckEdit1.CheckStyle = DevExpress.XtraEditors.Controls.CheckStyles.Standard;
////复选框加载的状态 实心 空心 空心打勾
//repositoryItemCheckEdit1.NullStyle = DevExpress.XtraEditors.Controls.StyleIndeterminate.Unchecked;
//点击事件
gv.Click += new System.EventHandler(gv_Click);
//画列头CheckEdit
gv.CustomDrawColumnHeader += new DevExpress.XtraGrid.Views.Grid.ColumnHeaderCustomDrawEventHandler(gv_CustomDrawColumnHeader);
gv.DataSourceChanged += new EventHandler(gv_DataSourceChanged);
}
}

private static void gv_Click(object sender, EventArgs e)
{
if (ClickGridCheckBox(GView, chkFileName, chkState))
{
chkState = !chkState;
}
}

private static void gv_CustomDrawColumnHeader(object sender, DevExpress.XtraGrid.Views.Grid.ColumnHeaderCustomDrawEventArgs e)
{
if (e.Column != null && e.Column.FieldName == chkFileName)
{
e.Info.InnerElements.Clear();
e.Painter.DrawObject(e.Info);
DrawCheckBox(e, chkState);
e.Handled = true;
}
}

private static void gv_DataSourceChanged(object sender, EventArgs e)
{
DevExpress.XtraGrid.Columns.GridColumn column = GView.Columns.ColumnByFieldName(chkFileName);
if (column != null)
{
column.Width = chkWidth;
column.OptionsColumn.ShowCaption = false;
column.ColumnEdit = new DevExpress.XtraEditors.Repository.RepositoryItemCheckEdit();
}
}

private static void DrawCheckBox(DevExpress.XtraGrid.Views.Grid.ColumnHeaderCustomDrawEventArgs e, bool chk)
{
DevExpress.XtraEditors.Repository.RepositoryItemCheckEdit repositoryCheck = e.Column.ColumnEdit as DevExpress.XtraEditors.Repository.RepositoryItemCheckEdit;
if (repositoryCheck != null)
{
System.Drawing.Graphics g = e.Graphics;
System.Drawing.Rectangle r = e.Bounds;

DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo info;
DevExpress.XtraEditors.Drawing.CheckEditPainter painter;
DevExpress.XtraEditors.Drawing.ControlGraphicsInfoArgs args;
info = repositoryCheck.CreateViewInfo() as DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo;

painter = repositoryCheck.CreatePainter() as DevExpress.XtraEditors.Drawing.CheckEditPainter;
info.EditValue = chk;
info.Bounds = r;
info.CalcViewInfo(g);
args = new DevExpress.XtraEditors.Drawing.ControlGraphicsInfoArgs(info, new DevExpress.Utils.Drawing.GraphicsCache(g), r);
painter.Draw(args);
args.Cache.Dispose();
}
}

private static bool ClickGridCheckBox(DevExpress.XtraGrid.Views.Grid.GridView gridView, string fieldName, bool currentStatus)
{
bool result = false;
if (gridView != null)
{
//禁止排序
gridView.ClearSorting();

gridView.PostEditor();
DevExpress.XtraGrid.Views.Grid.ViewInfo.GridHitInfo info;
System.Drawing.Point pt = gridView.GridControl.PointToClient(Control.MousePosition);
info = gridView.CalcHitInfo(pt);
if (info.InColumn && info.Column != null && info.Column.FieldName == fieldName)
{
for (int i = 0; i < gridView.RowCount; i++)
{
gridView.SetRowCellValue(i, fieldName, !currentStatus);
}
return true;
}
}
return result;
}

}

 

 

 

调用

Grid的数据源是Table时，需要对Table进行处理，代码如下

//table.Columns.Add("Chk",System.Type.GetType("System.Boolean"));
//table.Columns["Chk"].DefaultValue=Boolean.FalseString;

同时需要在GridControl中添加列绑定FiledName为Chk，并设置ColumnEdit为CheckBox。

GridControl.DataSource=table;

GridCheckEdit(gridView,fieldName,checkWidth);