c#,DEV控件使用

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使用下面的示例代码，以获得当前编辑的值。

string editingValue;

if(gridControl1.KeyboardFocusView.IsEditing)

editingValue = gridControl1.KeyboardFocusView.EditingValue.ToString();

///

/// 由资源文件获取图片 ///

/// byte[] GetImage(int key) {

Image img = DevExpress.Utils.Controls.ImageHelper.CreateImageFromResources(string.Format(\sources.{0}.gif\ return DevExpress.XtraEditors.Controls.ByteImageConverter.ToByteArray(img, ImageFormat.Gif); }

private void rILinkEditInfoDel_Click(object sender, EventArgs e)

{

if (XtraMessageBox.Show(\请确定是否删除当前记录？\\警告\MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes) {

DataRow row = gvInfos.GetDataRow(gvInfos.FocusedRowHandle); delByCode(row[\ XtraMessageBox.Show(\操作成功！\ }

}二、绑定非数据表中列

Hashtable ht = new Hashtable();

private

void

gridView6_CustomUnboundColumnData(object

sender,

DevExpress.XtraGrid.Views.Base.CustomColumnDataEventArgs e) {

GridView View = sender as GridView; if (e.RowHandle >= 0) {

object

needAlert

View.GetRowCellValue(e.RowHandle,

View.Columns[\

if (needAlert != null & needAlert != DBNull.Value && needAlert.ToString().Trim() != \alue(e.RowHandle, View.Columns[\alue\alue) {

decimal AverValue = Convert.ToDecimal(View.GetRowCellValue(e.RowHandle, View.Columns[\alue\ object MinValue View.Columns[\alue\ object MaxVlaue View.Columns[\alue\

if (MinValue != DBNull.Value & MinValue != null & MaxVlaue.ToString() != \& MaxVlaue != DBNull.Value && MaxVlaue != null & MaxVlaue.ToString() != \ {

decimal

gridColumn2

= =

Convert.ToDecimal(View.GetRowCellValue(e.RowHandle, View.Columns[\alue\ decimal gridColumn1 Convert.ToDecimal(View.GetRowCellValue(e.RowHandle, View.Columns[\alue\ if (gridColumn2 > AverValue || AverValue > gridColumn1) {

if (!ht.ContainsKey(\ ht.Add(\ e.Value = ht[\ } } }

} }

///

/// 由资源文件获取图片 ///

/// byte[] GetImage(int key) {

Image

img

= =

View.GetRowCellValue(e.RowHandle, View.GetRowCellValue(e.RowHandle,

DevExpress.Utils.Controls.ImageHelper.CreateImageFromResources(string.Format(\sources.{0}.gif\ return

ImageFormat.Gif); }

///

/// 动态根据条件设置行样式 ///

///

DevExpress.XtraEditors.Controls.ByteImageConverter.ToByteArray(img,

gridView6_RowStyle(object sender,

DevExpress.XtraGrid.Views.Grid.RowStyleEventArgs e) {

GridView View = sender as GridView; if (e.RowHandle >= 0) {

object

needAlert

View.GetRowCellValue(e.RowHandle,

View.Columns[\

if (needAlert != null & needAlert != DBNull.Value && needAlert.ToString().Trim() != \alue(e.RowHandle, View.Columns[\alue\alue) {

decimal AverValue = Convert.ToDecimal(View.GetRowCellValue(e.RowHandle, View.Columns[\alue\

object MinValue View.Columns[\alue\

object MaxVlaue View.Columns[\alue\

= =

View.GetRowCellValue(e.RowHandle, View.GetRowCellValue(e.RowHandle,

if (MinValue != DBNull.Value & MinValue != null & MaxVlaue.ToString() != \& MaxVlaue != DBNull.Value && MaxVlaue != null & MaxVlaue.ToString() != \ {

decimal gridColumn2 = Convert.ToDecimal(MinValue); decimal gridColumn1 = Convert.ToDecimal(MaxVlaue); if (gridColumn2 > AverValue || AverValue > gridColumn1) {

e.Appearance.ForeColor = Color.Red;

e.Appearance.BackColor = Color.LightGray; } }

} }

}三、GridControl 中颜色选择控件

private

void

gvMapColor_CustomUnboundColumnData(object

sender,

DevExpress.XtraGrid.Views.Base.CustomColumnDataEventArgs e) {

GridView view = sender as GridView;

DataView dv = view.DataSource as DataView; if (e.IsGetData)

{

string strVal = dv[e.ListSourceRowIndex][\ if (strVal != \ {

//e.Value = DevExpress.Utils.StyleLayout.ColorFromString(strVal); e.Value = Common.HexToColor(strVal); }

}

else {

//Color colorVal DevExpress.Utils.StyleLayout.ColorFromString(e.Value.ToString()); Color colorVal = (Color)e.Value;

dv[e.ListSourceRowIndex][\al.ToArgb()); }

}四、关于 GridControl 验证示例

/**////

/// 初始化GridView，绑定数据 ///

///

this.gridView1.Columns.Clear();

this.FDs= areaSetupActionHelper.getDsRegionByParentId(parentId); this.gridCArea.DataSource =this.FDs.Tables[0].DefaultView;

this.gridView1.Columns[\

this.gridView1.Columns[\区划编号\ this.gridView1.Columns[\区划名称\ this.gridView1.Columns[\父区划编号\ this.gridView1.Columns[\区划描述\ this.gridView1.Columns[\ this.gridView1.Columns[\

RepositoryItemTextEdit textEditReg_Id = new RepositoryItemTextEdit(); textEditReg_Id.Mask.EditMask =parentId+\

textEditReg_Id.Mask.MaskType = DevExpress.XtraEditors.Mask.MaskType.Regular;

this.gridView1.Columns[\

TreeListNode node = this.treelArea.FocusedNode.ParentNode; string fid = node==null?\alue(\ DataSet ds = areaSetupActionHelper.getDsRegionByParentId(fid);

RepositoryItemLookUpEdit lookUEParent_Id = new RepositoryItemLookUpEdit(); lookUEParent_Id.Columns.Add(new LookUpColumnInfo(\区划编号\ lookUEParent_Id.Columns.Add(new LookUpColumnInfo(\区划名称\

lookUEParent_Id.DataSource = ds.Tables[0].DefaultView;

lookUEParent_Id.ValueMember = \ lookUEParent_Id.DisplayMember = \

this.gridView1.Columns[\}

/**////

/// gridView单元格验证的相关处理程序 ///

///

private void gridView1_ValidatingEditor(object DevExpress.XtraEditors.Controls.BaseContainerValidateEditorEventArgs e) { if (e.Valid == false&this.gridView1.FocusedColumn.FieldName == \

{

e.ErrorText = \区划编号不合法！\\n应为父区划编号加2～3位数据组成！\ }

if (this.gridView1.FocusedColumn.FieldName == \ {

Regex reg=new Regex(@\ Match m=reg.Match(e.Value.ToString().Trim()); if (m.Length != e.Value.ToString().Trim().Length) { e.Valid = false;

e.ErrorText = \区划名称应为汉字\\n长度为1至20\ } }

}

private void gridView1_InvalidValueException(object sender, InvalidValueExceptionEventArgs e) {

if (MyDialog.Alert(\ 您所填写的内容不符合规则\\n 要放弃您刚才对此项所做的更改吗？\\您所编辑的内容不符合规则\MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes)

{

e.ExceptionMode = ExceptionMode.Ignore; } }

/**////

/// gridView行验证的相关处理程序

///

private void gridView1_ValidateRow(object DevExpress.XtraGrid.Views.Base.ValidateRowEventArgs e)

sender, sender,

{

string regid = this.gridView1.GetRowCellValue(e.RowHandle, \string regName = this.gridView1.GetRowCellValue(e.RowHandle, \if ( regid.Length < 1) {

e.Valid = false;

this.gridView1.SetColumnError(this.gridView1.Columns[\\请填写区划编号!\DevExpress.XtraEditors.DXErrorProvider.ErrorType.Default); // e.ErrorText = \区划名称不能为空!\ }

if (regName.Length < 1)

{ e.Valid = false;

this.gridView1.SetColumnError(this.gridView1.Columns[\\区划名称不能为空!\ } } private

void

gridView1_InvalidRowException(object

sender,

DevExpress.XtraGrid.Views.Base.InvalidRowExceptionEventArgs e) {

if (e.RowHandle >= 0) {

if (this.gridView1.GetRowCellValue(e.RowHandle, this.gridView1.Columns[\== \|| this.gridView1.GetRowCellValue(e.RowHandle,

this.gridView1.Columns[\ {

if (MyDialog.Alert(\ 您所填写的内容不符合规则\\n 要放弃您刚才对此项所做的更改吗？\\您所编辑的内容不符合规则\MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes) {

e.ExceptionMode = ExceptionMode.Ignore; } else

{

e.ExceptionMode = ExceptionMode.NoAction; } } } else {

e.ExceptionMode = ExceptionMode.Ignore;

} }

如果数据源中只包含图片的链接，如何在DevExpress GridControl的一列中显示外部图片？

要实现该功能，可通过非绑定列的方式来实现。具体实现方法如下：

1. 创建了一个非绑定列并设置其相应的属性，属性设置如下：

l FieldName设为 Image (该字段名必须是唯一的)

l UnboundType设为 UnboundColumnType.Object

l ColumnEdit设为RepositoryItemPictureEdit类的实例(该操作PictureEdit 为该列的内置编辑器)

2. 处理View的CustomUnboundColumnData事件，用于为非绑定列填充数据。在该事件中需加载图片，将其存放在一个hashtable中，然后再将其提供给对应的单元格。

关键代码：

//获取文件路径

string GetFileName(string color) {

if(color == null || color == string.Empty)

return string.Empty;

return color + \

}

//处理CustomUnboundColumnData事件，为非绑定列填充数据

private void gridView1_CustomUnboundColumnData(object DevExpress.XtraGrid.Views.Base.CustomColumnDataEventArgs e) {

if(e.Column.FieldName == \

GridView view = sender as GridView;

sender,

string colorName = (string)((DataRowView)e.Row)[\

string fileName = GetFileName(colorName).ToLower();

if(!Images.ContainsKey(fileName)) {

Image img = null;

try {

string filePath = DevExpress.Utils.FilesHelper.FindingFileName(Application.StartupPath, ImageDir + fileName, false);

img = Image.FromFile(filePath);

}

catch {

}

Images.Add(fileName, img);

}

e.Value = Images[fileName];

}

怎样给DevExpress XtraTreeList添加行的序号？ private void treeList1_CustomDrawNodeIndicator(object DevExpress.XtraTreeList.CustomDrawNodeIndicatorEventArgs e)

{

TreeList tree = sender as DevExpress.XtraTreeList.TreeList;

IndicatorObjectInfoArgs args = e.ObjectArgs as IndicatorObjectInfoArgs;

args.DisplayText = (tree.GetVisibleIndexByNode(e.Node) + 1).ToString();

sender,

}

怎样在DevExpress XtraTreeList中设置ToolTip？

您可以使用ToolTipController控件，然后通过ToolTipController.GetActiveObjectInfo事件来设置ToolTip 关键代码： private

{

if (e.SelectedControl is DevExpress.XtraTreeList.TreeList)

{

TreeList tree = (TreeList)e.SelectedControl;

TreeListHitInfo hit = tree.CalcHitInfo(e.ControlMousePosition);

if (hit.HitInfoType == HitInfoType.Cell)

{

object cellInfo = new TreeListCellToolTipInfo(hit.Node, hit.Column, null);

string toolTip = string.Format(\(Column: {1}, Node ID: {2})\hit.Node[hit.Column],

hit.Column.VisibleIndex, hit.Node.Id);

e.Info = new DevExpress.Utils.ToolTipControlInfo(cellInfo, toolTip);

}

} }

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。

1、数据绑定（IList）

void

toolTipController1_GetActiveObjectInfo(object

sender,

DevExpress.Utils.ToolTipControllerGetActiveObjectInfoEventArgs e)

DevExpress.XtraGrid.Views.Grid.GridView gridView1; IList list = new BindingList(); //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[url=ms-help://MS.VSCC.v80/MS.VSIPCC.v80/DevExpress.NETv8.2/

DevExpress.XtraData/DevExpressUtilsFormatInfo_FormatTypetopic.htm##]

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