电商购物/优化大师官方下载

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 = Convert.ToDecimal(View.GetRowCellValue(e.RowHandle, View.Columns["Value"]));object MinValue = 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 = 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 = Convert.ToDecimal(View.GetRowCellValue(e.RowHandle, View.Columns["Value"]));object MinValue = 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 = 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]["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;}
}