c#开发_Dev的关于XtraGrid的使用（GridControl小结）
1，增加新行用InitNewRow事件,给新行某字段赋值。后结束编辑。
private void grdView_InitNewRow(object sender, DevExpress.XtraGrid.Views.Grid.InitNewRowEventArgs e)
{
DevExpress.XtraGrid.Views.Grid.GridView view = sender as DevExpress.XtraGrid.Views.Grid.GridView;
view.SetRowCellValue(e.RowHandle, view.Columns["EnterID"], this.dS_MEnterStoreView.MEnterStore[0].ID);
this.grdControl.EmbeddedNavigator.Buttons.EndEdit.DoClick();
this.grdView.UpdateCurrentRow();
}
2，如果进行行验证，就在换行时时行，用grdView_FocusedRowChanged事件
private void grdView_FocusedRowChanged(object sender, DevExpress.XtraGrid.Views.Base.FocusedRowChangedEventArgs e)
{
WsClient.WS_MEnterStore.DS_MEnterStoreView.MEnterDetailRow row = (WsClient.WS_MEnterStore.DS_MEnterStoreView.MEnterDetailRow)this.grdView.GetDataRow(e.FocusedRowHandle);
if (row != null)
{
if ((this.OperState == Common.Enum.TOperState.UnConfirmNew)
|| (this.OperState == Common.Enum.TOperState.UnConfirmEdit))
{
this.InitComboBoxValue(row, row.IsGoodIDNull()?0:row.GoodID, false);
this.InitBatchComboBoxValue(row, row.IsGoodIDNull()?0:row.GoodID, false);
}
}
}
3,如果需要改变行的某一列的同时改变其它的列用grdView_CellValueChanged事件
private void grdView_CellValueChanged(object sender, DevExpress.XtraGrid.Views.Base.CellValueChangedEventArgs e)
{
if (this.grdView.FocusedColumn == e.Column)
{
if (e.Column == this.colAmount)
{
}
}
}
4,如果需在离开行的时候需要验证，则用grdView_BeforeLeaveRow事件.
DevExpress XtraGrid的功能实在强大，刚使用的时候看到一大片属性设置，分不清东南西北，参照demo和使用中的一些经验，记录一下使用方法。现在数据库访问都使用ORM技术了，对于DataSouce绑定以下是以IList为说明对象。
控件基本定义 DevExpress.XtraGrid.GridControl gridControl1;
1、 数据绑定（IList）
DevExpress.XtraGrid.Views.Grid.GridView gridView1; IList<MyClass> list = new BindingList<MyClass>(); //初始list list.Add(A); list.Add(B); ……….. gridControl1.DataSource = list;
2、 在Grid上编辑数据
修改属性gridView1.OptionsView.NewItemRowPosition，设为Top或Bottom可以在Grid上添加数据。
（在demo中原文：a record object must be inherited from the IEditableObject class if you need the ability to cancel newly added records via the grid）
译：如果你需要通过gird取消新建的记录，你的记录对象必须实现IEditableObject
（注：在测试中，感觉不需要继承IEditableObject，在grid编辑后也能实现取消。demo通过实现IEditableObject的BeginEdit、CancelEdit方法，数据编辑后恢复特定数据。不使用grid直接修改数据，可以考虑这种恢复原数据的方法。）
3、 修改列（Column）格式
DevExpress.XtraGrid.Columns.GridColumn col = gridView1.Columns[0];
数据对齐方式 col.AppearanceCell.TextOptions.HAlignment， 默认值Default，可选值Default/Near/Center/Far。
说明：以下情况是基于从左到右的文字排列；若是从右到左，用法相反。
Default：数据默认的对齐方式
Near：左对齐
Center：居中对齐
Far：右对齐
列标题 col.Caption
对应绑定数据的属性 col.FieldName
排列顺序 col.VisibleIndex
格式化显示数据
Col.DisplayFormat.FormatType
Col.DisplayFormat.Format
Col.DisplayFormat.FormatString
区别：FormatType/FormatString 使用当前系统的语言区域设置，Format使用特定的
4、 使用Grid内置导航栏
gridControl1.UseEmbeddedNativgator=True
设定内置导航栏按钮其他属性 gridControl1.EmbeddedNavigator
5、 GridView内置方式编辑数据
禁止编辑数据 gridView1.OptionsBehavior.Editable = False，默认是True 可编辑。
Gridview内置数据编辑器显示方式 gridView1.OptionsBehavior.EditorShowMode，可选值Default/ MouseDown/MouseUp/ Click。
说明：
Default 多选Cell相当于Click，单选Cell相当于MouseDown
MouseDown 在单元格内按下鼠标键时打开内置编辑器
MouseUp 在单元格内释放鼠标键时打开内置编辑器
Click 在不是编辑状态，但获得焦点的单元格中点击时打开编辑器。点击非焦点单元格时，首先会切换焦点，再点击时才打开编辑器
6、 设定GrideView单元格的内置编辑器
在Run Designer的Columns选中需要变更编辑方式的Column，在ColumnEdit 属性的下拉菜单中选择编辑数据使用的控件。
例1：Person表的CountryID字段的值来自Country表，使用下拉列表显示CountryName编辑
修改CountryIDColumn.ColumnEdit值，选new->LookupEdit，默认命名为repositoryItemLookUpEdit1。展开ColumnEdit属性，将DisplayMember 设为CountryName，DropDownRows是下拉列表的行数，ValueMember设为CountryID。
代码中添加：
//init data
repositoryItemLookUpEdit1.DataSource = ds.Tables[Country];
例2：字段Age是整型，需要使用SpinEdit编辑
修改AgeColumn.ColumnEdit值，选new->SpinEdit。展开ColumnEdit属性，修改MaxValue、MinValue设定最大、最小值。运行时Age的取值只能在MaxValue至MinValue之间选值。
7、 GridView调节行高显示大文本
默认情况下gridview已单行方式显示，过长的文本只能显示开头部分，鼠标停留在单元格上方有ToolTip显示所有文本。在文本单元格的右边两个按钮供切换显示上下行。若需要在单元格变更行高显示所有文本。使用
gridView1.OptionsView.RowAutoHeight = True;
gridView1.LayoutChanged();
private void gridView1_CalcRowHeight(object sender,DevExpress.XtraGrid.Views.Grid.RowHeightEventArgs e)
{
if(e.RowHandle >= 0)
e.RowHeight = (int)gridView1.GetDataRow(e.RowHandle)["RowHeight"];
}
8、 数据导出
XtraGrid支持Html、Xml、Txt、Xsl导出，对应的导出器是ExportHtmlProvider、ExportXmlProvider、ExportTxtProvider、ExportXslProvider
例：使用html格式导出数据
IExportProvider provider = new ExprotHtmlProvider(filename);
ExportTo(provider);
……
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.Progress += new DevExpress.XtraGrid.Export.ProgressEventHandler(Export_Progress);//进度条事件
link.ExportTo(true);
provider.Dispose();
link.Progress -= new DevExpress.XtraGrid.Export.ProgressEventHandler(Export_Progress);
Cursor.Current = currentCursor;
}
9、 焦点单元格显示方式
GrideView默认的焦点单元格显示方式是整行选中，焦点单元格高亮。可以调整以下属性进行修改
gridView1.FocusRectStyle ：焦点绘画方式 默认DrawFocusRectStyle.CellFocus（单元格）/ DrawFocusRectStyle.RowFocus（行）/ DrawFocusRectStyle.None（不绘画）
bool gridView1.OptionsSelection.EnableAppearanceFocusedCell ：是否焦点显示选中的单元格
bool gridView1.OptionsSelection.EnableAppearanceFocusedRow ：是否焦点显示选中的行
bool gridView1.OptionsSelection.InvertSelection ：是否反显示
bool gridView1.OptionsSelection.MultiSelect：是否使用多选
10、
显示非数据源的数据
可以在GrideView上增加数据源没有的列，如合计、日期、序号或其他数据源等。
方法一：实现CustomColumnDisplayText事件（只能用于显示）
以下例子在bandedGridColumn1上显示 FirstName+LastName
bandedGridColumn1.OptionsColumn.AllowEdit = false;
private void bandedGridView1_CustomColumnDisplayText(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDisplayTextEventArgs e)
{
if(e.Column.Equals(bandedGridColumn1))
{
DataRow row = bandedGridView1.GetDataRow(e.RowHandle);
e.DisplayText = string.Format("{0} {1}", row["FirstName"], row["LastName"]);
}
}
方法二： 设定列的UnboundType，并实现CustomUnboundColumnData事件（可修改值）
以下例子演示DateTime/Int/String 绑定到数据列上显示。当修改 GrideView上的值时，将修改同步到原数组中
bandedGridColumn4.UnboundType = DevExpress.Data.UnboundColumnType.DateTime;
bandedGridColumn5.UnboundType = DevExpress.Data.UnboundColumnType.Integer;
bandedGridColumn6.UnboundType = DevExpress.Data.UnboundColumnType.String;
private void bandedGridView1_CustomUnboundColumnData(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDataEventArgs e) {
if(array == null) return;
if(e.ListSourceRowIndex >= array.Count) return;
Record rec = array[e.ListSourceRowIndex] as Record;
if(rec == null) return;
switch(e.Column.UnboundType) {
case UnboundColumnType.DateTime:
if(e.IsGetData)
e.Value = rec.Date;
else rec.Date = (DateTime)e.Value;
break;
case UnboundColumnType.Integer:
if(e.IsGetData)
e.Value = rec.Count;
else rec.Count = (Int32)e.Value;
break;
case UnboundColumnType.String:
if(e.IsGetData)
e.Value = rec.Comment;
else rec.Comment = e.Value.ToString();
break;
}
}
提交当前行的修改
using DevExpress.XtraGrid;
using DevExpress.XtraGrid.Views.Base;
using System.Data.Common;
//...
public void UpdateDatasource(GridControl grid) {
//Save the latest changes to the bound DataTable
ColumnView view = (ColumnView)grid.FocusedView;
view.CloseEditor();
if(!view.UpdateCurrentRow()) return;
//Update the database's Suppliers table to which oleDBDataAdapter1 is connected
DoUpdate(oleDbDataAdapter1, dataSet11.Tables["Suppliers"]);
//Update the database's Products table to which the oleDbDataAdapter2 is connected
DoUpdate(oleDbDataAdapter2, dataSet11.Tables["Products"]);
}
public void DoUpdate(DbDataAdapter dataAdapter, System.Data.DataTable dataTable) {
try {
dataAdapter.Update(dataTable);
} catch(Exception ex) {
MessageBox.Show(ex.Message);
}
}
接着说，GirdControl如何定位和查找指定列显示值的行(注意是列的实显示值，而不是关联数据源列值)
下面请看代码：
using DevExpress.XtraGrid.Views.Base;
using DevExpress.XtraGrid.Columns;
// ...
string searchText = "Japan";
// obtaining the focused view
ColumnView view = (ColumnView)gridControl1.FocusedView;
// obtaining the column bound to the Country field
GridColumn column = view.Columns["Country"];
if(column != null) {
// locating the row
//如果用数据源中的列值，请用ColumnView.LocateByValue
int rhFound = view.LocateByDisplayText(view.FocusedRowHandle + 1, column, searchText);
// focusing the cell
if(rhFound != GridControl.InvalidRowHandle) {
view.FocusedRowHandle = rhFound;
view.FocusedColumn = column;
}
}
另一个查找示例
DevExpress.XtraGrid.Views.Base.ColumnView view = gridControl1.MainView as DevExpress.XtraGrid.Views.Base.ColumnView;
view.BeginUpdate();
try {
int rowHandle = 0;
DevExpress.XtraGrid.Columns.GridColumn col = view.Columns["Category"];
while(true) {
// locating the next row
rowHandle = view.LocateByValue(rowHandle, col, "SPORTS");
// exiting the loop if no row is found
if (rowHandle == DevExpress.XtraGrid.GridControl.InvalidRowHandle)
break;
// perform specific operations on the row found here
// ...
rowHandle++;
}
}
finally {
view.EndUpdate();
}
将特定编辑框绑定到列
默认的cell编辑框是不可以改变的，即使是在运行时，因为它们是动态创建和注销的。
要想定制，就在设计时修改ColumnEdit吧。
using DevExpress.XtraEditors.Repository;
//Create a repository item for a combo box editor
RepositoryItemComboBox riCombo = new RepositoryItemComboBox();
riCombo.Items.AddRange(new string[] {"London", "Berlin", "Paris"});
//Add the item to the internal repository
gridControl1.RepositoryItems.Add(riCombo);
//Now you can define the repository item as an in-place column editor
colCity.ColumnEdit = riCombo;
另一个运行时绑定列编辑框示例
private void gridView1_CustomRowCellEdit(object sender, DevExpress.XtraGrid.Views.Grid.CustomRowCellEditEventArgs e) {
if (e.Column.FieldName == "FieldName") return;
DevExpress.XtraGrid.Views.Grid.GridView gv = sender as DevExpress.XtraGrid.Views.Grid.GridView;
string fieldName = gv.GetRowCellValue(e.RowHandle, gv.Columns["FieldName"]).ToString();
switch (fieldName) {
case "Population":
e.RepositoryItem = repositoryItemSpinEdit1;
break;
case "Country":
e.RepositoryItem = repositoryItemComboBox1;
break;
case "Capital":
e.RepositoryItem = repositoryItemCheckEdit1;
break;
}
}
检验录入数据是否有效
using DevExpress.XtraGrid.Views.Grid; using DevExpress.XtraGrid.Columns; public bool isValidDate(int day, int month, int year) { return (day > 0) && (month > 0) && (month <= 12) && (year > 1980) && (year < 2100) && (day <= DateTime.DaysInMonth(year, month)); } private void gridView1_ValidateRow(object sender, DevExpress.XtraGrid.Views.Base.ValidateRowEventArgs e) { GridView view = sender as GridView; GridColumn colDay = view.Columns["Day"]; GridColumn colMonth = view.Columns["Month"]; GridColumn colYear = view.Columns["Year"]; int day = (int)view.GetRowCellValue(e.RowHandle, colDay); int month = (int)view.GetRowCellValue(e.RowHandle, colMonth); int year = (int)view.GetRowCellValue(e.RowHandle, colYear); e.Valid = isValidDate(day, month, year); if(!e.Valid) { view.SetColumnError(colDay, "Check the day"); view.SetColumnError(colMonth, "Check the month"); view.SetColumnError(colYear, "Check the year"); } }
MouseMove捕捉
private void Grid_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
ShowHitInfo(this.gridView1.CalcHitInfo(new Point(e.X, e.Y)));
}
private void ShowHitInfo(DevExpress.XtraGrid.Views.Grid.ViewInfo.GridHitInfo hi)
{
DevExpress.XtraGrid.Views.Base.ColumnView cgv =
(DevExpress.XtraGrid.Views.Base.ColumnView)Grid.MainView;
string columnName = hi.Column == null ? "No column" : hi.Column.Caption;
switch(columnName)
{
case "账号":
txtUserName.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column);
break;
case "密码":
txtPassword.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column);
break;
case "真实姓名":
txtRealName.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column);
break;
case "电子邮件":
txtEmail.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column);
break;
case "角色":
cbRole.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column);
break;
default:
txtUserName.Text = "Null";
txtPassword.Text = "Null";
txtRealName.Text = "Null";
txtEmail.Text = "Null";
cbRole.Text = "Null";
break;
}
主从表的设置
DataTable dt = pb.GetItemInfoList(Port).Copy(); //返回一个TABLE
dt.TableName = "ItemInfo";
ds.Tables.Add(dt);
DataTable dt2 = pb.GetBuildingInfoList(Port).Copy(); //返回一个TABLE
dt2.TableName = "BuildingInfo";
ds.Tables.Add(dt2);
DataColumn keyColumn = ds.Tables["ItemInfo"].Columns["ITEMINFO_ID"];
DataColumn foreignKeyColumn = ds.Tables["BuildingInfo"].Columns["ITEMINFOID"];
ds.Relations.Add("itembuildinginfo", keyColumn, foreignKeyColumn);
gridControl1.DataSource = ds.Tables["ItemInfo"];
获取从表的当前选择行的某一列（如ID列）
这个时候再使用获取主表当前选择行的某一列的方法是不行的，因为所得到的seletedrowscount=0。使用如下方法得到：
在MASTER表的展开事件中得到detail有的view.然后就可以利用它了。例：
//主表的masterrowexpanded事件
private void gridView1_MasterRowExpanded(object sender, DevExpress.XtraGrid.Views.Grid.CustomMasterRowEventArgs e)
{
detailView = gridView1.GetDetailView(e.RowHandle, e.RelationIndex) as DevExpress.XtraGrid.Views.Grid.GridView;
}
//取得从表的当前行
int[] i = detailView.GetSelectedRows();
DataRowView dt = (DataRowView)detailView.GetRow(i[0]);
//获得当前行某列的值可以使用
dt["列名"].ToString();
//获得当那个列的值。
定义焦点行的方法：
gridView_bcode.FocusedRowHandle = focuseRowInt; //通过设置GridView 的FocusedRowHandle属性
//获取焦点行任意单元格的数据
ColumnView cv = (ColumnView)gridControl_Gongzi.FocusedView;//重新获取此ID 否则无法从表头连删获取不到id
int focusedhandle = cv.FocusedRowHandle;
object rowIdObj = gridView1.GetRowCellValue(focusedhandle, "id");
if (DBNull.Value != rowIdObj)
{
FocusedRow_id = Convert.ToInt32(rowIdObj);
}
//获取焦点行任意单元格的数据
ColumnView cv = (ColumnView)gridControl_Gongzi.FocusedView;//重新获取此ID 否则无法从表头连删获取不到id
int focusedhandle = cv.FocusedRowHandle;
object rowIdObj = gridView1.GetRowCellValue(focusedhandle, "id");
if (DBNull.Value != rowIdObj)
{
FocusedRow_id = Convert.ToInt32(rowIdObj);
}
view plaincopy to clipboardprint?
//当数据发生变化时执行
private void gridView1_CellValueChanged(object sender, CellValueChangedEventArgs e)
{
int intRowHandle = e.RowHandle;
FocusedRow_bumen = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "bumen"));
FocusedRow_xingming = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "xingming"));
//FocusedRow_jibengongzi = Convert.ToDecimal(gridView1.GetRowCellValue(intRowHandle, "jibengongzi"));
object rowJibengongziObj = gridView1.GetRowCellValue(intRowHandle, "jibengongzi");
if (DBNull.Value != rowJibengongziObj)
{
FocusedRow_jibengongzi = Convert.ToDecimal(rowJibengongziObj);
}
}
//当数据发生变化时执行
private void gridView1_CellValueChanged(object sender, CellValueChangedEventArgs e)
{
int intRowHandle = e.RowHandle;
FocusedRow_bumen = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "bumen"));
FocusedRow_xingming = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "xingming"));
//FocusedRow_jibengongzi = Convert.ToDecimal(gridView1.GetRowCellValue(intRowHandle, "jibengongzi"));
object rowJibengongziObj = gridView1.GetRowCellValue(intRowHandle, "jibengongzi");
if (DBNull.Value != rowJibengongziObj)
{
FocusedRow_jibengongzi = Convert.ToDecimal(rowJibengongziObj);
}
} view plaincopy to clipboardprint?
//设置焦点行的焦点单元格的位置
ColumnView view = (ColumnView)gridControl_Gongzi.FocusedView;
view.FocusedColumn = view.Columns["bumen"];
//设置焦点行的焦点单元格的位置
ColumnView view = (ColumnView)gridControl_Gongzi.FocusedView;
view.FocusedColumn = view.Columns["bumen"]; view plaincopy to clipboardprint?
//当焦点行发生改变时执行 获取选中焦点行id
private void gridView1_FocusedRowChanged(object sender, DevExpress.XtraGrid.Views.Base.FocusedRowChangedEventArgs e)
{
int intRowHandle = e.FocusedRowHandle;
object rowIdObj = gridView1.GetRowCellValue(intRowHandle, "id");
if (DBNull.Value != rowIdObj)//做个判断否则获取不到id后报错
{
FocusedRow_id = Convert.ToInt32(rowIdObj);
}
}
//当焦点行发生改变时执行 获取选中焦点行id
private void gridView1_FocusedRowChanged(object sender, DevExpress.XtraGrid.Views.Base.FocusedRowChangedEventArgs e)
{
int intRowHandle = e.FocusedRowHandle;
object rowIdObj = gridView1.GetRowCellValue(intRowHandle, "id");
if (DBNull.Value != rowIdObj)//做个判断否则获取不到id后报错
{
FocusedRow_id = Convert.ToInt32(rowIdObj);
}
}
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//焦点行的FocusedHandle为：
FocuseRow_Handle = -999998;
//获取焦点行的handle
ColumnView newview = (ColumnView)gridControl_Gongzi.FocusedView;
FocuseRow_Handle = newview.FocusedRowHandle;
//回车添加新行
代码
private void gridView1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == 13)
{
ColumnView view = (ColumnView)gridControl_Gongzi.FocusedView;
if(view.IsLastRow)
{
if (FocuseRow_Handle == 0)
{
gridView1.AddNewRow();
ColumnView newview = (ColumnView)gridControl_Gongzi.FocusedView;
newview.FocusedColumn = newview.Columns["bumen"];//定位焦点网格的位置
FocuseRow_Handle = newview.FocusedRowHandle;//获取新焦点行的FocuseRowHandle 并初始化全局变量FocuseRow_Handle供保存操作时判断是upd ate还是insert
}