随着DevExpress 控件包越来越多的被中国用户使用，由于是英文版本，看英文版使用说明非常困难，慧都控件网在DevExpress 控件包使用方面有多年的研究，慧都控件网会不断的把DevExpress 使用经验分享给大家。»更多DevExpress开发资源与帮助文档 下面是我们平时收集最常用的DevExpress Winform 4个代码片段，比较常用，希望对广大DEV用户有帮助。

一 、GridControl的删除操作

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["Code"].ToString());         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["needAlert"]);         if (needAlert != null & needAlert != DBNull.Value && needAlert.ToString().Trim() != "0" & View.GetRowCellValue(e.RowHandle, View.Columns["Value"]) != DBNull.Value)         {             decimal AverValue = http://www.mamicode.com/Convert.ToDecimal(View.GetRowCellValue(e.RowHandle, View.Columns["Value"]));             object MinValue = http://www.mamicode.com/View.GetRowCellValue(e.RowHandle, View.Columns["MinValue"]);             object MaxVlaue = View.GetRowCellValue(e.RowHandle, View.Columns["MaxValue"]);             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["MinValue"]));                 decimal gridColumn1 = Convert.ToDecimal(View.GetRowCellValue(e.RowHandle, View.Columns["MaxValue"]));                 if (gridColumn2 > AverValue || AverValue > gridColumn1)                 {                     if (!ht.ContainsKey("pic"))                         ht.Add("pic", GetImage(1));                     e.Value = http://www.mamicode.com/ht["pic"];                 }             }         }     }}/// <summary>/// 由资源文件获取图片/// </summary>/// <param name="key"></param>/// <returns></returns>byte[] GetImage(int key){     Image img = DevExpress.Utils.Controls.ImageHelper.CreateImageFromResources(string.Format("RiverSys.Resources.{0}.gif", key.ToString()), typeof(RiverInfos).Assembly);     return DevExpress.XtraEditors.Controls.ByteImageConverter.ToByteArray(img, ImageFormat.Gif);}/// <summary>/// 动态根据条件设置行样式/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void 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["needAlert"]);         if (needAlert != null & needAlert != DBNull.Value && needAlert.ToString().Trim() != "0" & View.GetRowCellValue(e.RowHandle, View.Columns["Value"]) != DBNull.Value)         {             decimal AverValue = http://www.mamicode.com/Convert.ToDecimal(View.GetRowCellValue(e.RowHandle, View.Columns["Value"]));             object MinValue = http://www.mamicode.com/View.GetRowCellValue(e.RowHandle, View.Columns["MinValue"]);             object MaxVlaue = View.GetRowCellValue(e.RowHandle, View.Columns["MaxValue"]);             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]["Color"].ToString();         if (strVal != "")         {             //e.Value = http://www.mamicode.com/DevExpress.Utils.StyleLayout.ColorFromString(strVal);"Color"] = Common.RGB_HEX(colorVal.ToArgb());     }}

四、关于 GridControl 验证示例

/**//// <summary>/// 初始化GridView，绑定数据/// </summary>/// <param name="parentId"></param>private void GridViewBindData(string parentId){this.gridView1.Columns.Clear();this.FDs= areaSetupActionHelper.getDsRegionByParentId(parentId);this.gridCArea.DataSource =this.FDs.Tables[0].DefaultView;    this.gridView1.Columns["id"].VisibleIndex = -1;    this.gridView1.Columns["childCounts"].VisibleIndex = -1;    this.gridView1.Columns["reg_id"].Caption = "区划编号";    this.gridView1.Columns["reg_name"].Caption = "区划名称";    this.gridView1.Columns["parent_id"].Caption = "父区划编号";    this.gridView1.Columns["reg_desc"].Caption = "区划描述";    this.gridView1.Columns["parent_id"].ImageIndex =1;    this.gridView1.Columns["reg_desc"].ImageIndex = 0;    RepositoryItemTextEdit textEditReg_Id = new RepositoryItemTextEdit();    textEditReg_Id.Mask.EditMask =parentId+"\\d{2,3}";    textEditReg_Id.Mask.MaskType = DevExpress.XtraEditors.Mask.MaskType.Regular;    this.gridView1.Columns["reg_id"].ColumnEdit = textEditReg_Id;    this.gridView1.Columns["reg_desc"].ColumnEdit = new RepositoryItemMemoExEdit();    TreeListNode node = this.treelArea.FocusedNode.ParentNode;    string fid = node==null?"0":node.GetValue("RegID").ToString().Trim();    DataSet ds = areaSetupActionHelper.getDsRegionByParentId(fid);    RepositoryItemLookUpEdit lookUEParent_Id = new RepositoryItemLookUpEdit();    lookUEParent_Id.Columns.Add(new LookUpColumnInfo("reg_id", 40, "区划编号"));    lookUEParent_Id.Columns.Add(new LookUpColumnInfo("reg_name", 40, "区划名称"));    lookUEParent_Id.DataSource = ds.Tables[0].DefaultView;    lookUEParent_Id.ValueMember = "reg_id";    lookUEParent_Id.DisplayMember = "reg_id";    this.gridView1.Columns["parent_id"].ColumnEdit = lookUEParent_Id;}/**//// <summary>/// gridView单元格验证的相关处理程序/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void gridView1_ValidatingEditor(object sender, DevExpress.XtraEditors.Controls.BaseContainerValidateEditorEventArgs e){if (e.Valid == false&this.gridView1.FocusedColumn.FieldName == "reg_id"){      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 == "reg_name")    {          Regex reg=new Regex(@"[\u4e00-\u9fa5]{1,20}");     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;    }}/**//// <summary>/// gridView行验证的相关处理程序/// </summary>private void gridView1_ValidateRow(object sender, DevExpress.XtraGrid.Views.Base.ValidateRowEventArgs e){string regid = this.gridView1.GetRowCellValue(e.RowHandle, "reg_id").ToString().Trim();string regName = this.gridView1.GetRowCellValue(e.RowHandle, "reg_name").ToString().Trim();if ( regid.Length < 1){     e.Valid = false;     this.gridView1.SetColumnError(this.gridView1.Columns["reg_id"], "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["reg_name"], "区划名称不能为空!", DevExpress.XtraEditors.DXErrorProvider.ErrorType.Default);    }}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["reg_id"]).ToString().Trim() == "" || this.gridView1.GetRowCellValue(e.RowHandle, this.gridView1.Columns["reg_name"]).ToString().Trim() == "")     {      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;    }}