在DevExpress ：GridControl常用屬性設置 （3）中，已經說到了2個代碼片段，現在來看看后面的兩個片段：

三、GridControl 中顏色選擇控件

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、關于 GridControl 驗證示例

/**//// <summary>
/// 初始化GridView，綁定數據
/// </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 = "區劃編號";
this.gridView1.Columns["reg_name"].Caption = "區劃名稱";
this.gridView1.Columns["parent_id"].Caption = "父區劃編號";
this.gridView1.Columns["reg_desc"].Caption = "區劃描述";
this.gridView1.Columns["parent_id"].ImageIndex =1;
this.gridView1.Columns["reg_desc"].ImageIndex = 0;

RepositoryItemTextEdit textEditReg_Id = new RepositoryItemTextEdit();
textEditReg_Id.Mask.EditMask =parentId+"file://d%7b2,3/}";
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, "區劃編號"));
lookUEParent_Id.Columns.Add(new LookUpColumnInfo("reg_name", 40, "區劃名稱"));
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單元格驗證的相關處理程序
/// </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 = "區劃編號不合法！\n應為父區劃編號加2～3位數據組成！";
}
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 = "區劃名稱應為漢字\n長度為1至20";
}
}
}

private void gridView1_InvalidValueException(object sender, InvalidValueExceptionEventArgs e)
{
if (MyDialog.Alert(" 您所填寫的內容不符合規則\n 要放棄您剛才對此項所做的更改嗎？", "您所編輯的內容不符合規則", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes)
{
e.ExceptionMode = ExceptionMode.Ignore;
}
}

/**//// <summary>
/// gridView行驗證的相關處理程序
/// </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"], "請填寫區劃編號!", DevExpress.XtraEditors.DXErrorProvider.ErrorType.Default);
// e.ErrorText = "區劃名稱不能為空!";
}
if (regName.Length < 1)
{
e.Valid = false;
this.gridView1.SetColumnError(this.gridView1.Columns["reg_name"], "區劃名稱不能為空!", 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("  您所填寫的內容不符合規則\n 要放棄您剛才對此項所做的更改嗎？", "您所編輯的內容不符合規則", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes)
{
e.ExceptionMode = ExceptionMode.Ignore;
}
else
{
e.ExceptionMode = ExceptionMode.NoAction;
}
}
}
else
{
e.ExceptionMode = ExceptionMode.Ignore;
}
}