.Net使用XtraGrid控件綁定數(shù)據(jù)
設(shè)計數(shù)據(jù)源并綁定字段:
數(shù)據(jù)源可以是實現(xiàn)下列接口之一的任何類型:
- IList 接口,包括一維數(shù)組。List<T>等!
- IListSource 接口,例如,DataTable 和 DataSet 類。
- IBindingList 接口,例如,BindingList 類。
- IBindingListView 接口,例如,BindingSource 類。
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); // 綁定字段 gridView1.Columns[1].FieldName = "Sex"; gridView1.Columns[2].FieldName = "Age"; gridView1.Columns[0].FieldName = "Name"; gridControl1.DataSource = dataTable;
根據(jù)數(shù)據(jù)源自動產(chǎn)生列
gridView2.PopulateColumns();
表格數(shù)據(jù)與數(shù)據(jù)源的數(shù)據(jù)同步
XtraGrid與Windows自帶的DataGridView在數(shù)據(jù)源方面不同的是,對grid里的數(shù)據(jù)進(jìn)行任何改動(增、刪、改)之后,原本的數(shù)據(jù)源也相應(yīng)的改動。通過下面例子可以得出此結(jié)論,在窗體添加刪,改兩個按鈕并綁定下面相應(yīng)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> /// 刪除 /// </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()); }
只要對grid的數(shù)據(jù)經(jīng)過改動之后,單擊相應(yīng)的按鈕就可以查看數(shù)據(jù)源的信息。
新增一條記錄,添加行
(1)、gridView.AddNewRow()、gridView.UpdateCurrentRow()
數(shù)據(jù)源DataSource如果是DataTable可以用AddNewRow方法,然后UpdateCurrentRow。
但是如果DataSource的來源是List<T>,用AddNewRow是不起作用的,這時候需要將List<T>轉(zhuǎn)換為BindingList<T>,才可以采用AddNewRow。
然后使用gridView.UpdateCurrentRow()將更改同步到數(shù)據(jù)源DataTable或BindingList中。
(2)、實現(xiàn) gridView_InitNewRow 事件
刪除選中行
刪除選中行, 可通過DeleteSelectedRows()方法,
然后使用gridView.UpdateCurrentRow()將更改同步到數(shù)據(jù)源DataTable或BindingList中。
具體示例代碼如下:
if (gridView1.SelectedRowsCount > 0) { gridView1.DeleteSelectedRows(); gridView.UpdateCurrentRow() }
獲取選定行,指定列單元格的內(nèi)容
gridView1.GetRowCellValue(pRows[0], ColumName).ToString ();
選擇某行后獲取當(dāng)前表格數(shù)據(jù):
this.textBox1.Text = gridView2.GetDataRow(e.RowHandle)["列名"].ToString();
Get/Set 單元格的值
通過調(diào)用GetRowCellValue獲取單元格的值。
public override object GetRowCellValue(int rowHandle, GridColumn column);
rowHandle是行的索引,column列的對象。
通過調(diào)用SetRowCellValue設(shè)置單元格的值
public void SetRowCellValue(int rowHandle, GridColumn column, object _value);
rowHandle是行的索引,column列的對象。_value是單元格新的值。
以peopleList為例
int englishS=Convert.ToDouble(0,gridView1.Columns["English"])+60; SetRowCellValue(0,gridView1.Columns["English"],englishS);
在XtraGrid有另一種方式,就是直接設(shè)置數(shù)據(jù)源的值。對于上面這個例子,直接找到grid里第一行數(shù)據(jù)對應(yīng)的Person對象,設(shè)置它的English值。
選中行改變綁定行數(shù)據(jù)到對應(yīng)控件中
1、判斷是否有Focused行
if (gridView1.IsValidRowHandle(gridView1.FocusedRowHandle))
2、獲取Focused行
1、綁定的是數(shù)據(jù)行:
DataRow Row = gridView1.GetFocusedDataRow();
2、綁定的是實體:
**Entity entity = gridView1.GetFocusedRow() as **Entity;
3、獲取Focused行單元格的值
string Code = gridView1.GetFocusedRowCellValue("Code").ToString(); string Code = gridView1.GetRowCellValue(e.FocusedRowHandle, "Code")
FocusedRowChanged事件:
if (bandedGridView1.GetFocusedDataRow() == null) return;//判斷當(dāng)前選中行是否為null //返回值 var columnValue= bandedGridView1.GetFocusedRowCellValue("綁定列字段名稱").ToString();
動態(tài)添加列
// 動態(tài)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);
添加非綁定列
下面的例子主要演示如何為gird網(wǎng)格添加一個非綁定列,從而顯示根據(jù) Quantity*UnitPrice*(1-Discount)公式計算出來的每個訂單的金額。
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); }
編輯器
XtraGrid提供了多種編輯器。這些能夠在Grid/CardView/BandedView中使用。在屬性編輯器中的In-place Editor Repository可以對編輯器進(jìn)行管理。在Columns的ColumnEdit中選擇該列使用哪個編輯器。
也可以通過代碼實現(xiàn):
RepositoryItemComboBox repositoryItemComboBox_abc=new RepositoryItemComboBox(); // // 對編輯器進(jìn)行設(shè)置 // this.gridColumn1.ColumnEdit = repositoryItemComboBox_abc; //在需要的列里使用定義好的編輯器
添加按鈕列
把列的ColumnEdit屬性設(shè)置為RepositoryItemButtonEdit
把TextEditStyle屬性設(shè)置為HideTextEditor;
把Buttons的Kind屬性設(shè)置為Glyph;
把Button的Caption用于設(shè)置文字
把Buttons的TextOption的HAlignment屬性設(shè)置為Near;
如果要用到事件的話,還要注冊事件。。。
在GridControl的設(shè)計器中Repository頁中的In-place Editor Repository項中
在右邊的Repository欄中找到你的ButtonEdit,選它的事件屬性頁,注冊它的ButtonClick事件即可
數(shù)據(jù)驗證
有兩種方法來實現(xiàn)基于單元格的驗證:
1、使用RepositoryItem.Validating事件
事件的"sender" 必須轉(zhuǎn)換為BaseEdit類型,使用EditValue來獲取當(dāng)前輸入的值并進(jìn)行校驗,如果校驗不通過,把e.Cancel設(shè)置True。這種方法一般用來對內(nèi)置控件的單元格進(jìn)行數(shù)據(jù)驗證。
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; //標(biāo)識 錯誤提示 errorReason = 0; return; } else { //獲取GridView中所有的選中的行號 //此處不允許多選,故只有一行 int[] iRowId = this.gViewActList.GetSelectedRows(); for (int i = 0; i < gViewActList.DataRowCount; i++) { //重復(fù)檢驗時,不驗證當(dāng)前行 if (i != iRowId[0]) { if (textEdit.EditValue.ToString().Trim() == gViewActList.GetDataRow(i)["GridView上綁定的列名"].ToString().Trim()) { e.Cancel = true; //標(biāo)識 錯誤提示 errorReason = 1; return; } } } } }
跟據(jù)Validating事件中的標(biāo)識,進(jìn)行錯誤信息提示:
private void gViewActList_InvalidValueException(object sender, InvalidValueExceptionEventArgs e) { if (errorReason == 0) { e.ErrorText = "動作名稱不允許為空!"; } else if (errorReason == 1) { e.ErrorText = "動作名稱不允許為重復(fù)!"; } else { e.ErrorText = "值無效!"; } }
2、使用 GridView.ValidatingEditor 事件
事件的"sender"必須轉(zhuǎn)換為GridView類型,當(dāng)前列可以從GridView.FocusedColumn屬性獲得,值可以從e.Value獲取,如果校驗不通過,需要把e.Valid設(shè)置為False。這種方法一般用于對整個Grid內(nèi)的文本框進(jìn)行數(shù)據(jù)驗證
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 = "合格數(shù)量必須為大于等于0, 并且小于等于接貨數(shù)量的整數(shù)!"; }else{ if (int.Parse(passQty) > receiveQty){ e.Valid = false; e.ErrorText = "合格數(shù)量必須為大于0, 并且小于等于接貨數(shù)量的整數(shù)!"; } } } }
在設(shè)置完事件之后需要寫一個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 = "驗證通過"; e.DisplayError = true; }
3、使用 GridView.ValidateRow事件
在gridview的ValidateRow事件中加入數(shù)據(jù)校驗代碼:
#region 檢查數(shù)據(jù) 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"], "必須指定出生日期"); } }
添加CheckBox并支持多選操作.
OptionsSelection -> MultiSelect : True
MultiSelectMode : CheckBoxRowSelect
全選和反選
這是一個比較難的問題,這里我結(jié)合網(wǎng)上尋找的資料總結(jié)了一個實體類貼上源代碼
//------------------------------------------------------------------------------------- // 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 創(chuàng)建全選復(fù)選框 /// /// 修改紀(jì)錄 /// /// 2014-5-30 版本:1.0 YangHengLian 創(chuàng)建主鍵,注意命名空間的排序。 /// /// 版本:1.0 /// /// <author> /// <name>YangHengLian</name> /// <date>2014-5-30</date> /// </author> /// </summary> public class DevControlHelper { /// <summary> /// 創(chuàng)建復(fù)選框 /// </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> /// 全選,反選 /// </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; } } }
下面是使用步驟
窗體加載事件添加一些代碼
private bool _mCheckStatus; //GridControl全選,作為全局變量,默認(rèn)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可以編輯改變 gridBand1.Columns.Insert(0, col); bandedGridView1.Click += bandedGridView1_Click; bandedGridView1.CustomDrawColumnHeader += bandedGridView1_CustomDrawColumnHeader; bandedGridView1.DataSourceChanged += bandedGridView1_DataSourceChanged; //這里綁定數(shù)據(jù)源 } #region GridControl支持全選事件 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
重繪單元格或者行的顯示,使用CustomDrawCell()事件
通過在Appearence中添加FormatCondition,設(shè)置應(yīng)用與整行,還是單一個單元格,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; } } }
數(shù)據(jù)導(dǎo)入導(dǎo)出
原文:Export to XLS and XLSX Formats | WinForms Controls | DevExpress Documentation
XtraGrid 支持Html、Xml、Txt、Xsl導(dǎo)出,對應(yīng)的導(dǎo)出器是ExportHtmlProvider、ExportXmlProvider、 ExportTxtProvider、ExportXslProvider。都在命名空間DevExpress.XtraExport里面。
這里封裝了一個數(shù)據(jù)導(dǎo)出的方法,可以導(dǎo)出上述列舉的類型,只需要傳入相應(yīng)類型的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; }
調(diào)用時只需要創(chuàng)建一個相應(yīng)的provider。
IExportProvider provider = new ExportXlsProvider(FullFileName); //這里可以是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);
導(dǎo)入數(shù)據(jù)只嘗試了導(dǎo)入Excel的導(dǎo)入,利用ODBC讀取Excel的數(shù)據(jù)到DataTable中,再把DataTable綁定到XtraGrid中。這里也是封裝了一個讀取Excel數(shù)據(jù)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的架構(gòu),包括各個sheet表的名稱,類型,創(chuàng)建時間和修改時間等 DataTable dtSheetName = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" }); //包含excel中表名的字符串?dāng)?shù)組 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(); //從指定的表明查詢數(shù)據(jù),可先把所有表明列出來供用戶選擇 string strExcel = "select * from[" + strTableNames[0] + "]"; da = new OleDbDataAdapter(strExcel, conn); da.Fill(ds); return ds; }
以這樣方式調(diào)用。
DataSet ds = GetDataFromExcelWithAppointSheetName(FullFileName);
導(dǎo)出到PDF
一種方法:
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();
二種:
DevExpress.XtraGrid.Views.Grid.GridView View = gridControl1.MainView as DevExpress.XtraGrid.Views.Grid.GridView; if (View != null) { View.OptionsPrint.ExpandAllDetails = true;//請注意,僅當(dāng)GridOptionsPrint.PrintDetails屬性設(shè)置為true時,此設(shè)置才有效。 View.ExportToPdf("MainViewData.pdf"); }
行雙擊事件的處理
要響應(yīng)GridView的單擊或者雙擊事件,要設(shè)置GridView的OptionsBehavior.Editable=false。如果為true,它是不會響應(yīng)這這兩個事件的。 它本的的機制就是這樣。
//雙擊行彈出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) { //判斷光標(biāo)是否在行范圍內(nèi) if (hInfo.InRow) { //取得選定行信息 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方法與DoubleClick有什么區(qū)別呢?grid1_DoubleClick(object sender, EventArgs e)函數(shù)會捕獲整個grid的雙擊事件而不僅僅是雙擊列表行事件,比如:你雙擊表頭、列表展示數(shù)據(jù)的下方的空白部分都會引發(fā)grid1_DoubleClick(object sender, EventArgs e)函數(shù),而ViewHtlb_MouseDown(object sender, MouseEventArgs e)函數(shù)此時不會被激活。
定位到某數(shù)據(jù)/記錄??
this.gridView.MoveFirst(); this.gridView.MoveNext(); this.gridView.MoveLast();
禁止 各列頭 移動\排序\改變列寬
gridView1.OptionsCustomization.AllowColumnMoving = false; gridView1.OptionsCustomization.AllowSort = false; gridView1.OptionsCustomization.AllowColumnResizing = false;
拖動滾動條時固定某一列
設(shè)置Columns,選擇要固定的列,設(shè)置Fixed屬性,
可以選擇以下固定方式:
- a. 固定在左邊、
- b. 固定在右邊、
- c. 不固定。
呈現(xiàn)給用戶自定義的菜單:
#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("固定到左邊", menu.Column, DevExpress.XtraGrid.Columns.FixedStyle.Left, imageList2.Images[1])); menu.Items.Add(CreateCheckItem("固定到右邊", 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
設(shè)置自動增加的行號
this.gridView1.IndicatorWidth = 30;//設(shè)置顯示行號的列寬
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(); } } }
在查詢得到 0 條記錄時, 顯示自定義的字符提示
// When no Records Are Being Displayed private void gridView1_CustomDrawEmptyForeground(object sender, CustomDrawEventArgs e) { // 方法一(此方法為GridView設(shè)置了數(shù)據(jù)源綁定時,可用) ColumnView columnView = sender as ColumnView; BindingSource bindingSource = this.gridView1.DataSource as BindingSource; if(bindingSource.Count == 0){ string str = "沒有查詢到你所想要的數(shù)據(jù)!"; Font f = new Font("宋體", 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 適用于: GridView 沒有設(shè)置數(shù)據(jù)源時) if (this._flag){ if (this.gridView1.RowCount == 0){ string str = "沒有查詢到你所想要的數(shù)據(jù)!"; Font f = new Font("宋體", 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); } }
到此這篇關(guān)于.Net使用XtraGrid控件綁定數(shù)據(jù)的文章就介紹到這了。希望對大家的學(xué)習(xí)有所幫助,也希望大家多多支持腳本之家。
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