.Net使用XtraGrid控件绑定数据
设计数据源并绑定字段：
数据源可以是实现下列接口之一的任何类型：
- IList 接口，包括一维数组。List<T>等！
- IListSource 接口，例如，DataTable 和 DataSet 类。
- IBindingList 接口，例如，BindingList 类。
- IBindingListView 接口，例如，BindingSource 类。
修改也是同步的
DataTable dataTable = new DataTable();
dataTable.Columns.Add("Name", System.Type.GetType("System.String"));
dataTable.Columns.Add("Sex", System.Type.GetType("System.String"));
dataTable.Columns.Add("Age", System.Type.GetType("System.String"));
DataRow row = dt.NewRow(); ;
row["Name"] = "mathilda";
row["Sex"] = "loli";
row["Age"] = "12";
dataTable.Rows.Add(row);
// 绑定字段
gridView1.Columns[1].FieldName = "Sex";
gridView1.Columns[2].FieldName = "Age";
gridView1.Columns[0].FieldName = "Name";
gridControl1.DataSource = dataTable;根据数据源自动产生列
gridView2.PopulateColumns();表格数据与数据源的数据同步
XtraGrid与windows自带的DataGridView在数据源方面不同的是，对grid里的数据进行任何改动(增、删、改)之后，原本的数据源也相应的改动。通过下面例子可以得出此结论，在窗体添加删，改两个按钮并绑定下面相应的事件。
/// <summary>
/// 更改
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btEdit_Click(object sender, EventArgs e)
{
Person p = (Person)gridView1.GetRow(gridView1.FocusedRowHandle);
}
/// <summary>
/// 删除
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btDelete_Click(object sender, EventArgs e)
{
if (gridView1.SelectedRowsCount != 0)
gridView1.DeleteSelectedRows();
MessageBox.Show(people.Count.ToString());
}只要对grid的数据经过改动之后，单击相应的按钮就可以查看数据源的信息。
新增一条记录，添加行
(1)、gridView.AddNewRow()、gridView.UpdateCurrentRow()
数据源DataSource如果是DataTable可以用AddNewRow方法，然后UpdateCurrentRow。
但是如果DataSource的来源是List<T>，用AddNewRow是不起作用的，这时候需要将List<T>转换为BindingList<T>，才可以采用AddNewRow。
然后使用gridView.UpdateCurrentRow()将更改同步到数据源DataTable或BindingList中。
(2)、实现 gridView_InitNewRow 事件
删除选中行
删除选中行, 可通过DeleteSelectedRows()方法，
然后使用gridView.UpdateCurrentRow()将更改同步到数据源DataTable或BindingList中。
具体示例代码如下：
if (gridView1.SelectedRowsCount > 0)
{
gridView1.DeleteSelectedRows();
gridView.UpdateCurrentRow()
}获取选定行,指定列单元格的内容
gridView1.GetRowCellValue(pRows[0], ColumName).ToString ();
选择某行后获取当前表格数据：
this.textBox1.Text = gridView2.GetDataRow(e.RowHandle)["列名"].ToString();
Get/Set 单元格的值
通过调用GetRowCellValue获取单元格的值。
public override object GetRowCellValue(int rowHandle, GridColumn column);rowHandle是行的索引，column列的对象。
通过调用SetRowCellValue设置单元格的值
public void SetRowCellValue(int rowHandle, GridColumn column, object _value);rowHandle是行的索引，column列的对象。_value是单元格新的值。
以peopleList为例
int englishS=Convert.ToDouble(0,gridView1.Columns["English"])+60;
SetRowCellValue(0,gridView1.Columns["English"],englishS);在XtraGrid有另一种方式，就是直接设置数据源的值。对于上面这个例子，直接找到grid里第一行数据对应的Person对象，设置它的English值。
选中行改变绑定行数据到对应控件中
1、判断是否有Focused行
if (gridView1.IsValidRowHandle(gridView1.FocusedRowHandle))2、获取Focused行
1、绑定的是数据行：
DataRow Row = gridView1.GetFocusedDataRow();2、绑定的是实体：
**Entity entity = gridView1.GetFocusedRow() as **Entity;3、获取Focused行单元格的值
string Code = gridView1.GetFocusedRowCellValue("Code").ToString();
string Code = gridView1.GetRowCellValue(e.FocusedRowHandle, "Code")FocusedRowChanged事件：
if (bandedGridView1.GetFocusedDataRow() == null) return;//判断当前选中行是否为null
//返回值
var columnValue= bandedGridView1.GetFocusedRowCellValue("绑定列字段名称").ToString();动态添加列
// 动态添加列
DevExpress.XtraGrid.Columns.GridColumn Col1 = new DevExpress.XtraGrid.Columns.GridColumn();
Col1.FieldName = "Name";
Col1.Caption = "名字";
Col1.Visible = false;
Col1.VisibleIndex = gvCountry.Columns.Count;
gvCountry.Columns.Add(Col1);添加非绑定列
下面的例子主要演示如何为gird网格添加一个非绑定列，从而显示根据 Quantity*UnitPrice*(1-Discount)公式计算出来的每个订单的金额。
private void FORM1_Load(object sender, System.EventArgs e)
{
// ...
gridControl1.ForceInitialize();
// Create an unbound column.
GridColumn unbColumn = gridView1.Columns.AddField("Total");
unbColumn.VisibleIndex = gridView1.Columns.Count;
unbColumn.UnboundType = DevExpress.Data.UnboundColumnType.Decimal;
// Disable editing.
unbColumn.OptionsColumn.AllowEdit = false;
// Specify format settings.
unbColumn.DisplayFormat.FormatType = DevExpress.Utils.FormatType.Numeric;
unbColumn.DisplayFormat.FormatString = "c";
// Customize the appearance settings.
unbColumn.AppearanceCell.BackColor = Color.LemonChiffon;
}
// Returns the total amount for a specific row.
decimal getTotalValue(int listSourceRowIndex)
{
DataRow row = nwindDataSet.Tables["Order Details"].Rows[listSourceRowIndex];
decimal unitPrice = Convert.ToDecimal(row["UnitPrice"]);
decimal quantity = Convert.ToDecimal(row["Quantity"]);
decimal discount = Convert.ToDecimal(row["Discount"]);
return unitPrice * quantity * (1 - discount);
}
// Provides data for the Total column.
private void gridView1_CustomUnboundColumnData(object sender, CustomColumnDataEventArgs e)
{
if (e.Column.FieldName == "Total" && e.IsGetData) e.Value =
getTotalValue(e.ListSourceRowIndex);
}编辑器
XtraGrid提供了多种编辑器。这些能够在Grid/CardView/BandedView中使用。在属性编辑器中的In-place Editor Repository可以对编辑器进行管理。在Columns的ColumnEdit中选择该列使用哪个编辑器。
也可以通过代码实现：
RepositoryItemComboBox repositoryItemComboBox_abc=new RepositoryItemComboBox();
//
// 对编辑器进行设置
//
this.gridColumn1.ColumnEdit = repositoryItemComboBox_abc; //在需要的列里使用定义好的编辑器添加按钮列
把列的ColumnEdit属性设置为RepositoryItemButtonEdit
把TextEditStyle属性设置为HideTextEditor;
把Buttons的Kind属性设置为Glyph;
把Button的Caption用于设置文字
把Buttons的TextOption的HAlignment属性设置为Near;
如果要用到事件的话，还要注册事件。。。
在GridControl的设计器中Repository页中的In-place Editor Repository项中
在右边的Repository栏中找到你的ButtonEdit,选它的事件属性页，注册它的ButtonClick事件即可
数据验证
有两种方法来实现基于单元格的验证：
1、使用RepositoryItem.Validating事件
事件的"sender" 必须转换为BaseEdit类型，使用EditValue来获取当前输入的值并进行校验，如果校验不通过，把e.Cancel设置True。这种方法一般用来对内置控件的单元格进行数据验证。
private void TextEdit1_Validating(object sender, System.ComponentModel.CancelEventArgs e)
{
BaseEdit textEdit = sender as BaseEdit;
if (textEdit.Text.ToString().Trim().Length == 0)
{
e.Cancel = true;
//标识 错误提示
errorReason = 0;
return;
}
else
{
//获取GridView中所有的选中的行号
//此处不允许多选，故只有一行
int[] iRowId = this.gViewActList.GetSelectedRows();
for (int i = 0; i < gViewActList.DataRowCount; i++)
{
//重复检验时，不验证当前行
if (i != iRowId[0])
{
if (textEdit.EditValue.ToString().Trim() == gViewActList.GetDataRow(i)["GridView上绑定的列名"].ToString().Trim())
{
e.Cancel = true;
//标识 错误提示
errorReason = 1;
return;
}
}
}
}
}跟据Validating事件中的标识，进行错误信息提示：
private void gViewActList_InvalidValueException(object sender, InvalidValueExceptionEventArgs e)
{
if (errorReason == 0)
{
e.ErrorText = "动作名称不允许为空！";
}
else if (errorReason == 1)
{
e.ErrorText = "动作名称不允许为重复！";
}
else
{
e.ErrorText = "值无效！";
}
}2、使用 GridView.ValidatingEditor 事件
事件的"sender"必须转换为GridView类型，当前列可以从GridView.FocusedColumn属性获得，值可以从e.Value获取，如果校验不通过，需要把e.Valid设置为False。这种方法一般用于对整个Grid内的文本框进行数据验证
private void gvList_ValidatingEditor(object sender, DevExpress.XtraEditors.Controls.BaseContainerValidateEditorEventArgs e){
if (this.gvList.FocusedColumn.FieldName == "passQty"){
string passQty = e.Value.ToString().Trim();
int receiveQty = orderDetailList[this.gvList.FocusedRowHandle].qty;
if (!JXType.IsIntBigThanZero(passQty)){
e.Valid = false;
e.ErrorText = "合格数量必须为大于等于0, 并且小于等于接货数量的整数！";
}else{
if (int.Parse(passQty) > receiveQty){
e.Valid = false;
e.ErrorText = "合格数量必须为大于0, 并且小于等于接货数量的整数！";
}
}
}
}在设置完事件之后需要写一个GridView.InvalidValueException 的事件委托，如
private void gridView1_InvalidValueException(object sender, DevExpress.XtraGrid.Views.Base.InvalidValueExceptionEventArgs e)
{
e.ThrowException = false;
e.WindowText = "验证通过";
e.DisplayError = true;
}3、使用 GridView.ValidateRow事件
在gridview的ValidateRow事件中加入数据校验代码：
#region 检查数据
private void gridView1_ValidateRow(object sender, ValidateRowEventArgs e){
GridView view = sender as GridView;
view.ClearColumnErrors();
if (view.GetRowCellValue(e.RowHandle, "Birthday") == DBNull.Value){
e.Valid = false;
view.SetColumnError(view.Columns["Birthday"], "必须指定出生日期");
}
}添加CheckBox并支持多选操作.
OptionsSelection -> MultiSelect : True
MultiSelectMode : CheckBoxRowSelect
全选和反选
这是一个比较难的问题，这里我结合网上寻找的资料总结了一个实体类贴上源代码
//-------------------------------------------------------------------------------------
// All Rights Reserved , Copyright (C) 2014 , ZTO , Ltd .
//-------------------------------------------------------------------------------------
using System.Drawing;
using System.Windows.Forms;
using DevExpress.XtraEditors.Repository;
namespace ZTO.WayBill.Utilities
{
/// <summary>
/// Dev GridControl 创建全选复选框
///
/// 修改纪录
///
/// 2014-5-30 版本：1.0 YangHengLian 创建主键，注意命名空间的排序。
///
/// 版本：1.0
///
/// <author>
/// <name>YangHengLian</name>
/// <date>2014-5-30</date>
/// </author>
/// </summary>
public class DevControlHelper
{
/// <summary>
/// 创建复选框
/// </summary>
/// <param name="e"></param>
/// <param name="chk"></param>
public static void DrawCheckBox(DevExpress.XtraGrid.Views.Grid.ColumnHeaderCustomDrawEventArgs e, bool chk)
{
RepositoryItemCheckEdit repositoryCheck = e.Column.ColumnEdit as RepositoryItemCheckEdit;
if (repositoryCheck != null)
{
Graphics g = e.Graphics;
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();
}
}
/// <summary>
/// 全选，反选
/// </summary>
/// <param name="gridView"></param>
/// <param name="fieldName"></param>
/// <param name="currentStatus"></param>
/// <returns></returns>
public static bool ClickGridCheckBox(DevExpress.XtraGrid.Views.Grid.GridView gridView, string fieldName, bool currentStatus)
{
bool result = false;
if (gridView != null)
{
gridView.ClearSorting();//禁止排序
gridView.PostEditor();
DevExpress.XtraGrid.Views.Grid.ViewInfo.GridHitInfo info;
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;
}
}
}下面是使用步骤
窗体加载事件添加一些代码
private bool _mCheckStatus; //GridControl全选，作为全局变量，默认false
private void FrmInputBill_Load(object sender, EventArgs e)
{
bandedGridView1.OptionsBehavior.Editable = false;
bandedGridView1.OptionsBehavior.ReadOnly = true;
var col = new BandedGridColumn { FieldName = "Check", Visible = true, VisibleIndex = 0, ColumnEdit = new RepositoryItemCheckEdit() };
col.OptionsColumn.AllowEdit = true; //CheckBox可以编辑改变
gridBand1.Columns.Insert(0, col);
bandedGridView1.Click += bandedGridView1_Click;
bandedGridView1.CustomDrawColumnHeader += bandedGridView1_CustomDrawColumnHeader;
bandedGridView1.DataSourceChanged += bandedGridView1_DataSourceChanged;
//这里绑定数据源
}
#region GridControl支持全选事件
private void bandedGridView1_Click(object sender, EventArgs e)
{
if (DevControlHelper.ClickGridCheckBox(this.bandedGridView1, "Check", _mCheckStatus))
{
_mCheckStatus = !_mCheckStatus;
}
}
private void bandedGridView1_CustomDrawColumnHeader(object sender, ColumnHeaderCustomDrawEventArgs e)
{
if (e.Column != null && e.Column.FieldName == "Check")
{
e.Info.InnerElements.Clear();
e.Painter.DrawObject(e.Info);
DevControlHelper.DrawCheckBox(e, _mCheckStatus);
e.Handled = true;
}
}
private void bandedGridView1_DataSourceChanged(object sender, EventArgs e)
{
GridColumn column = this.bandedGridView1.Columns.ColumnByFieldName("Check");
if (column != null)
{
column.Width = 40;
column.OptionsColumn.ShowCaption = false;
column.ColumnEdit = new RepositoryItemCheckEdit();
}
}
#endregion重绘单元格或者行的显示，使用CustomDrawCell（）事件
通过在Appearence中添加FormatCondition，设置应用与整行，还是单一个单元格，使用CustomDrawCell事件。
void gridView1_CustomDrawCell(object sender, DevExpress.XtraGrid.Views.Base.RowCellCustomDrawEventArgs e)
{
var currentView = sender as GridView;
if (currentView != null && e.RowHandle == currentView.FocusedRowHandle) return;
Rectangle r = e.Bounds;
if (e.Column.FieldName == "F_State")
{
if (e.CellValue.ToString().Equals("False"))
{
e.Appearance.ForeColor = Color.Red;
e.Appearance.DrawString(e.Cache, e.DisplayText, r);
e.Handled = true;
}
}
}数据导入导出
原文：Export to XLS and XLSX Formats | winforms Controls | DevExpress Documentation
XtraGrid 支持html、Xml、Txt、Xsl导出，对应的导出器是ExportHtmlProvider、ExportXmlProvider、 ExportTxtProvider、ExportXslProvider。都在命名空间DevExpress.XtraExport里面。
这里封装了一个数据导出的方法，可以导出上述列举的类型，只需要传入相应类型的provider就可以了。
private void ExportTo(IExportProvider provider)
{
Cursor currentCursor = Cursor.Current;
Cursor.Current = Cursors.WaitCursor;
this.FindForm().Refresh();
BaseExportLink link = gridView1.CreateExportLink(provider);
(link as GridViewExportLink).ExpandAll = false;
link.ExportTo(true);
provider.Dispose();
Cursor.Current = currentCursor;
}调用时只需要创建一个相应的provider。
IExportProvider provider = new ExportXlsProvider(FullFileName); //这里可以是ExportHtmlProvider、ExportXmlProvider、ExportTxtProvider
ExportTo(provider);也可以
string path = "output.xlsx";
//Customize export options
(gridControl1.MainView as GridView).OptionsPrint.PrintHeader = false;
XlsxExportOptionsEx advOptions = new XlsxExportOptionsEx();
advOptions.AllowGrouping = DevExpress.Utils.DefaultBoolean.False;
advOptions.ShowTotalSummaries = DevExpress.Utils.DefaultBoolean.False;
advOptions.SheetName = "Exported from Data Grid";
gridControl1.ExportToXlsx(path, advOptions);
// Open the created XLSX file with the default application.
Process.Start(path);导入数据只尝试了导入excel的导入，利用ODBC读取Excel的数据到DataTable中，再把DataTable绑定到XtraGrid中。这里也是封装了一个读取Excel数据的方法。
private DataSet GetDataFromExcelWithAppointSheetName(string Path)
{
String strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" +"Data Source=" + Path + ";" +"Extended Properties=Excel 8.0;";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
//返回Excel的架构，包括各个sheet表的名称,类型，创建时间和修改时间等
DataTable dtSheetName = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" });
//包含excel中表名的字符串数组
string[] strTableNames = new string[dtSheetName.Rows.Count];
for (int k = 0; k < dtSheetName.Rows.Count; k++)
{
strTableNames[k] = dtSheetName.Rows[k]["TABLE_NAME"].ToString();
}
OleDbDataAdapter da = null;
DataSet ds = new DataSet();
//从指定的表明查询数据,可先把所有表明列出来供用户选择
string strExcel = "select * from[" + strTableNames[0] + "]";
da = new OleDbDataAdapter(strExcel, conn);
da.Fill(ds);
return ds;
}以这样方式调用。
DataSet ds = GetDataFromExcelWithAppointSheetName(FullFileName);导出到PDF
一种方法：
using DevExpress.XtraPrinting;
// Create a PrintingSystem component.
DevExpress.XtraPrinting.PrintingSystem ps = new DevExpress.XtraPrinting.PrintingSystem();
// Create a link that will print a control.
DevExpress.XtraPrinting.PrintableComponentLink link = new PrintableComponentLink(ps);
// Specify the control to be printed.
link.Component = gridControl1;
// Generate a report.
link.CreateDocument();
// Export the report to a PDF file.
string filePath = @"c:\gridcontrol.pdf";
link.PrintingSystem.ExportToPdf(filePath);
System.Diagnostics.Process process = new System.Diagnostics.Process();
process.StartInfo.FileName = filePath;
process.Start();二种：
DevExpress.XtraGrid.Views.Grid.GridView View = gridControl1.MainView as DevExpress.XtraGrid.Views.Grid.GridView;
if (View != null) {
View.OptionsPrint.ExpandAllDetails = true;//请注意，仅当GridOptionsPrint.PrintDetails属性设置为true时，此设置才有效。
View.ExportToPdf("MainViewData.pdf");
}行双击事件的处理
要响应GridView的单击或者双击事件，要设置GridView的OptionsBehavior.Editable＝false。如果为true,它是不会响应这这两个事件的。 它本的的机制就是这样。
//双击行弹出rowDetail信息
private void gridView1_MouseDown(object sender, MouseEventArgs e)
{
DevExpress.XtraGrid.Views.Grid.ViewInfo.GridHitInfo hInfo = gridView1.CalcHitInfo(new Point(e.X,e.Y));
if (gridView1.RowCount > 0 && e.Button == MouseButtons.Left && e.Clicks == 2)
{
//判断光标是否在行范围内
if (hInfo.InRow)
{
//取得选定行信息
string nodeName = gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "nodeName").ToString();
//string nodeName = gridView1.GetRowCellValue(gridView1.GetSelectedRows()[0], "nodeName").ToString();
string sql = "select nodeDetail from treelist where nodeName = '" + nodeName + "'";
SqlCommand comm = new SqlCommand(sql, conn);
try
{
conn.Open();
MessageBox.Show(comm.ExecuteScalar().ToString(), "Detail");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error");
}
finally
{
conn.Close();
}
}
}
}那么MouseDown方法与DoubleClick有什么区别呢？grid1_DoubleClick(object sender, EventArgs e)函数会捕获整个grid的双击事件而不仅仅是双击列表行事件，比如：你双击表头、列表展示数据的下方的空白部分都会引发grid1_DoubleClick(object sender, EventArgs e)函数，而ViewHtlb_MouseDown(object sender, MouseEventArgs e)函数此时不会被激活。
定位到某数据/记录？？
this.gridView.MoveFirst();
this.gridView.MoveNext();
this.gridView.MoveLast();禁止 各列头 移动\排序\改变列宽
gridView1.OptionsCustomization.AllowColumnMoving = false;
gridView1.OptionsCustomization.AllowSort = false;
gridView1.OptionsCustomization.AllowColumnResizing = false;拖动滚动条时固定某一列
设置Columns，选择要固定的列，设置Fixed属性，
可以选择以下固定方式：
- a. 固定在左边、
- b. 固定在右边、
- c. 不固定。
呈现给用户自定义的菜单：
#region Grid events
private void gridView_PopupMenuShowing(object sender, DevExpress.XtraGrid.Views.Grid.PopupMenuShowingEventArgs e)
{
if (e.MenuType == DevExpress.XtraGrid.Views.Grid.GridMenuType.Column)
{
DevExpress.XtraGrid.Menu.GridViewColumnMenu menu = e.Menu as DevExpress.XtraGrid.Menu.GridViewColumnMenu;
menu.Items.Clear();
if (menu.Column != null)
{
menu.Items.Add(CreateCheckItem("取消固定", menu.Column, DevExpress.XtraGrid.Columns.FixedStyle.None, imageList2.Images[0]));
menu.Items.Add(CreateCheckItem("固定到左边", menu.Column, DevExpress.XtraGrid.Columns.FixedStyle.Left, imageList2.Images[1]));
menu.Items.Add(CreateCheckItem("固定到右边", menu.Column, DevExpress.XtraGrid.Columns.FixedStyle.Right, imageList2.Images[2]));
}
}
}
#endregion
#region New column menu
DXMenuCheckItem CreateCheckItem(string caption, GridColumn column, DevExpress.XtraGrid.Columns.FixedStyle style, Image image)
{
DXMenuCheckItem item = new DXMenuCheckItem(caption, column.Fixed == style, image, new EventHandler(OnFixedClick));
item.Tag = new MenuInfo(column, style);
return item;
}
void OnFixedClick(object sender, EventArgs e)
{
DXMenuItem item = sender as DXMenuItem;
MenuInfo info = item.Tag as MenuInfo;
if (info == null) return;
info.Column.Fixed = info.Style;
}
class MenuInfo
{
public MenuInfo(GridColumn column, DevExpress.XtraGrid.Columns.FixedStyle style)
{
this.Column = column;
this.Style = style;
}
public DevExpress.XtraGrid.Columns.FixedStyle Style;
public GridColumn Column;
}
#endregion设置自动增加的行号
this.gridView1.IndicatorWidth = 30;//设置显示行号的列宽
private void gridview_CustomDrawRowIndicator(object sender,DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventArgs e){
e.Appearance.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Far;
if(e.Info.IsRowIndicator){
if(e.RowHandle >= 0){
e.Info.DisplayText = (e.RowHandle + 1).ToString();
}else if(e.RowHandle > -1000 && e.RowHandle < 0){
e.Info.Appearance.BackColor = System.Drawing.Color.AntiqueWhite;
e.Info.DisplayText = "G" + e.RowHandle.ToString();
}
}
｝在查询得到 0 条记录时, 显示自定义的字符提示
// When no Records Are Being Displayed
private void gridView1_CustomDrawEmptyForeground(object sender, CustomDrawEventArgs e)
{
// 方法一（此方法为GridView设置了数据源绑定时，可用）
ColumnView columnView = sender as ColumnView;
BindingSource bindingSource = this.gridView1.DataSource as BindingSource;
if(bindingSource.Count == 0){
string str = "没有查询到你所想要的数据!";
Font f = new Font("宋体", 10, FontStyle.Bold);
var tmpLeft = e.Bounds.Left + 5;
var tmpTop = e.Bounds.Top + 5;
var tmpWidth = e.Bounds.Width - 5;
var tmpHeight = e.Bounds.Height - 5;
Rectangle r = new Rectangle(tmpLeft, tmpTop, tmpWidth, tmpHeight);
e.Graphics.DrawString(str, f, Brushes.Black, rect);
}
}
// 方法二（此方法 适用于: GridView 没有设置数据源时）
if (this._flag){
if (this.gridView1.RowCount == 0){
string str = "没有查询到你所想要的数据!";
Font f = new Font("宋体", 10, FontStyle.Bold);
var tmpLeft = e.Bounds.Left + 5;
var tmpTop = e.Bounds.Top + 5;
var tmpWidth = e.Bounds.Width - 5;
var tmpHeight = e.Bounds.Height - 5;
Rectangle r = new Rectangle(tmpLeft, tmpTop, tmpWidth, tmpHeight);
e.Graphics.DrawString(str, f, Brushes.Black, r);
}
}到此这篇关于.net使用XtraGrid控件绑定数据的文章就介绍到这了。希望对大家的学习有所帮助，也希望大家多多支持。
相关文章