DevExpress-GridControl常用屬性
1.隱藏最上面的GroupPanel
gridView1.OptionsView.ShowGroupPanel=false;
2.得到當前選定記錄某欄位的值
sVal=Table.Rows[gridView1.FocusedRowHandle][FieldName].ToString();
;//允許多選 gridView1.OptionsSelection.MultiSelect = true；
//遮蔽查詢容器
gridView1.OptionsView.ShowFilterPanelMode = ShowFilterPanelMode.Never;
3.資料只讀
gridView1.OptionsBehavior.Editable=false;
4.不顯示MasterDetailView
gridView1.OptionsDetail.EnableMasterViewMode=false;
5.修改最上面的GroupPanel內容
gridView1.GroupPanelText="柳生飄絮";
6.設定資料來源:
gridControl1.DataSource = dt;
繫結每一列的FiledName--屬性
對於Oracle資料庫,所有的在設計器裡寫的程式中的欄位名必須大寫,否則可能繫結不上欄位,sqlserver沒有這個限制.
7.讀寫拷貝許可權設定
只讀不可拷貝：
ColumnViewOptionsBehavior.Editable = False
只讀可拷貝:
ColumnViewOptionsBehavior.Editable = Tr
OptionsColumn.AllowEdit = Tr
OptionsColumn.ReadOnly = Tr
可編輯:
ColumnViewOptionsBehavior.Editable = Tr
OptionsColumn.AllowEdit = Tr
OptionsColumn.ReadOnly = False
8.模板列的設定:
到Columns中，在他的屬性中找到ColumnEdit.
以LookUpEdit為例：
首先從Designer左邊選單In-Place Editor Repository中新增LookUpEdit.取名為Re1.然後.在他的Columns屬性中新增3列.Caption依次為:編號,姓名,性別.FieldName依次為:FID,FNAME,FSEX.然後將Re1的NullText設定成空.
AutoSearchColumnIndex屬性設定為2.ImmediatePopup屬性設定為Tr.
SearchMode設定為OnlyInPopup.
然後將這個模板列附加到我們上面提到的列1(也就是將列1的ColumnEdit屬性設成Re1)
最後我們還要在程式碼裡面給Re1繫結資料來源和顯示項.
Re1.DataSource = DALUse.Qry("select fid,fname,fsex from d l").Tables[0];
Re1.DisplayMember = "FSEX";
Re1.ValMember = "FNAME";
9.設某一列文字和標題局中顯示
gridView1.Columns[0].AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;
gridView1.Columns[0].AppearanceCell.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;
10.去掉某一列上面的自動篩選功能(Filter)
gridView1.Columns[0].OptionsFilter.AllowAutoFilter = false;
gridView1.Columns[0].OptionsFilter.AllowFilter = false;
gridView1.Columns[0].OptionsFilter.ImmediateUpdateAutoFilter = false;
11.設定凍結列(左凍結)
gridView1.Columns[0].Fixed= DevExpress.XtraGrid.Columns.FixedStyle.Left;
12.得到單元格資料(0行0列)
string ss=gridView1.GetRowCellDisplayText(0, gridView1.Columns[0]);
string ss = gridView1.GetRowCellVal(0, gridView1.Columns[0]);
13.設定單元格資料(將0行0列的單元格賦值123)
gridView1.SetRowCellVal(0, gridView1.Columns[0], "123");
13.手動新增dev的列
DevExpress.XtraGrid.Columns.GridColumn Col1=new DevExpress.XtraGrid.Columns.GridColumn ();
Col1.FieldName="FID";
Col1.Visible=tr;
Col1.VisibleIndex=gridView1.Columns.Count;
gridView1.Columns.Add(Col1);
14.設定自動增加的行號,需要先新增給gridview新增事件CustomDrawRowIndicator
private void gridview_CustomDrawRowIndicator(object sender,
DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventArgs e)
{
if (e.Info.IsRowIndicator && e.RowHandle >= 0)
e.Info.DisplayText = (e.RowHandle + 1).ToString();
}
15.刪除: (修改了dgvdel裡的datagridviewdel方法)
p lic static void datagridviewdel_Dev(DevExpress.XtraGrid.Views.Grid.GridView Mydgv)
{
if (MessageBox.Show("你確定要刪除選中的記錄嗎？", "刪除提示", MessageBoxButtons.YesNo,
MessageBoxIcon.Warning, MessageBoxDefaultButton.Button2, 0, false) == DialogResult.Yes)
{
int iSelectRowCount = Mydgv.SelectedRowsCount;
if (iSelectRowCount > 0)
{
Mydgv.DeleteSelectedRows();
}
}
}
16. 新增: (對於新增,其本身的AddNewRow方法就可以做到)
private void btn_add_Click(object sender, EventArgs e)
{
gridView1.AddNewRow();
}
具體如果對於新加行還有什麼特別的設定,可以在它gridView1_InitNewRow事件中填寫:
private void gridView1_InitNewRow(object sender, DevExpress.XtraGrid.Views.Grid.InitNewRowEventArgs e)
{
ColumnView View = sender as ColumnView;
View.SetRowCellVal(e.RowHandle, View.Columns[0], gridView1.GetRowCellVal(gridView1.GetRowHandle
(gridView1.RowCount - 2), gridView1.Columns[0])); //複製最後一行的資料到新行
View.SetRowCellVal(e.RowHandle, View.Columns[1], gridView1.GetRowCellVal(gridView1.GetRowHandle
(gridView1.RowCount - 2), gridView1.Columns[1])); //複製最後一行的資料到新行
}
17. 儲存 (第三方控制元件提供的RefreshData和RefreshDataSource方法對於儲存資料都不好使,最後還是使用了Dgvsave的
datagridviewsave方法,用這個方法就可以)
18.特效：gridcontrol中有5種view 型式，普通的是gridview，然後分別為cardview、BandedView、Advanced BandedView、
LayoutView；共5種。
1）、view組中把OptionView下的viewmode 設定成“Carousel”就達到這種“旋轉木馬”式的gridcontrol view 特效了
2）、layoutView1.OptionsCarouselMode.PitchAngle 這個屬性決定“旋轉木馬”的pitch angle 螺距角; 螺旋角; 螺旋升角; 俯
仰角; 傾角; 節錐半形
3）、Roll Angle 屬性決定著 傾側角度
4）、指定資料來源，顯示資料：
//顯示資料
private void showData(List<Employee > list)
{
DataTable dt = new DataTable("OneEmployee");
dt.Columns.Add("Caption", System.Type.GetType("System.String"));
dt.Columns.Add("Department", System.Type.GetType("System.String"));
dt.Columns.Add("PhotoName", System.Type.GetType("System.Byte[]"));
for (int i = 0; i < list.Count; i++)
{
DataRow dr = dt.NewRow();
dr["Caption"] = list[i].Name;
dr["Department"] = list[i].Department;
string imagePath = @"D:/C#/photos/" + list[i].PhotoPath;
dr["PhotoName"] = getImageByte(imagePath);
dt.Rows.Add(dr);
}
gridControl1.DataSource = dt;
}
//返回圖片的位元組流byte[]
private byte[] getImageByte(string imagePath)
{
FileStream files = new FileStream(imagePath, FileMode.Open);
byte[] imgByte = new byte [files.Length ];
files.Read(imgByte, 0, imgByte.Length);
files.Close();
return imgByte;
}
19.檢查資料的有效性
在gridview的ValidateRow事件中加入檢查程式碼：
#region 檢查資料
private void gridView1_ValidateRow(object sender, ValidateRowEventArgs e)
{
GridView view = sender as GridView;
view.ClearColumnErrors();
if (view.GetRowCellVal(e.RowHandle, "ReceiveDate") == DBNull.Val)
{
e.Valid = false;
view.SetColumnError(view.Columns["ReceiveDate"], "必須指定日期");
}
}
#endregion
呼叫gridview.UpdateCurrentRow()方法執行檢查
最常用的DevExpress Winform 4個程式碼片段：
一 、GridControl的刪除操作
private void rILinkEditInfoDel_Click(object sender, EventArgs e)
{
if (XtraMessageBox.Show("請確定是否刪除當前記錄？", "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、繫結非資料表中列
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.GetRowCellVal(e.RowHandle, View.Columns["needAlert"]);
if (needAlert != null & needAlert != DBNull.Val && needAlert.ToString().Trim() != "0" & View.GetRowCellVal(e.RowHandle, View.Columns["Val"]) != DBNull.Val)
{
decimal AverVal = Convert.ToDecimal(View.GetRowCellVal(e.RowHandle, View.Columns["Val"]));
object MinVal = View.GetRowCellVal(e.RowHandle, View.Columns["MinVal"]);
object MaxVla = View.GetRowCellVal(e.RowHandle, View.Columns["MaxVal"]);
if (MinVal != DBNull.Val & MinVal != null & MaxVla.ToString() != "" & MaxVla != DBNull.Val && MaxVla != null & MaxVla.ToString() != "")
{
decimal gridColumn2 = Convert.ToDecimal(View.GetRowCellVal(e.RowHandle, View.Columns["MinVal"]));
decimal gridColumn1 = Convert.ToDecimal(View.GetRowCellVal(e.RowHandle, View.Columns["MaxVal"]));
if (gridColumn2 > AverVal || AverVal > gridColumn1)
{
if (!ht.ContainsKey("pic"))
ht.Add("pic", GetImage(1));
e.Val = ht["pic"];
}
}
}
}
}
/// <summary>
/// 由資原始檔獲取圖片
/// </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>
/// 動態根據條件設定行樣式
/// </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.GetRowCellVal(e.RowHandle, View.Columns["needAlert"]);
if (needAlert != null & needAlert != DBNull.Val && needAlert.ToString().Trim() != "0" & View.GetRowCellVal(e.RowHandle, View.Columns["Val"]) != DBNull.Val)
{
decimal AverVal = Convert.ToDecimal(View.GetRowCellVal(e.RowHandle, View.Columns["Val"]));
object MinVal = View.GetRowCellVal(e.RowHandle, View.Columns["MinVal"]);
object MaxVla = View.GetRowCellVal(e.RowHandle, View.Columns["MaxVal"]);
if (MinVal != DBNull.Val & MinVal != null & MaxVla.ToString() != "" & MaxVla != DBNull.Val && MaxVla != null & MaxVla.ToString() != "")
{
decimal gridColumn2 = Convert.ToDecimal(MinVal);
decimal gridColumn1 = Convert.ToDecimal(MaxVla);
if (gridColumn2 > AverVal || AverVal > gridColumn1)
{
e.Appearance.ForeColor = Color.Red;
e.Appearance.BackColor = Color.LightGray;
}
}
}
}
}
三、GridControl 中顏色選擇控制元件
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.Val = DevExpress.Utils.StyleLayout.ColorFromString(strVal);
e.Val = Common.HexToColor(strVal);
}
}
else
{
//Color colorVal = DevExpress.Utils.StyleLayout.ColorFromString(e.Val.ToString());
Color colorVal = (Color)e.Val;
dv[e.ListSourceRowIndex]["Color"] = Common.RGB_HEX(colorVal.ToArgb());
}
}
四、關於 GridControl 驗證示例
/**//// <summary>
/// 初始化GridView，繫結資料
/// </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+"//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.GetVal("RegID").ToString().Trim();
DataSet ds = areaSetupActionHelper.getDsRegionByParentId(fid);
RepositoryItemLookUpEdit lookParent_Id = new RepositoryItemLookUpEdit();
lookParent_Id.Columns.Add(new LookUpColumnInfo("reg_id", 40, "區劃編號"));
lookParent_Id.Columns.Add(new LookUpColumnInfo("reg_name", 40, "區劃名稱"));
lookParent_Id.DataSource = ds.Tables[0].DefaultView;
lookParent_Id.ValMember = "reg_id";
lookParent_Id.DisplayMember = "reg_id";
this.gridView1.Columns["parent_id"].ColumnEdit = lookParent_Id;
}
/**//// <summary>
/// gridView單元格驗證的相關處理程式
/// </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位資料組成！";
}
if (this.gridView1.FocusedColumn.FieldName == "reg_name")
{
Regex reg=new Regex(@"[/一-/龥]{1,20}");
Match m=reg.Match(e.Val.ToString().Trim());
if (m.Length != e.Val.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_InvalidValException(object sender, InvalidValExceptionEventArgs 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式
/// </summary>
private void gridView1_ValidateRow(object sender, DevExpress.XtraGrid.Views.Base.ValidateRowEventArgs e)
{
string regid = this.gridView1.GetRowCellVal(e.RowHandle, "reg_id").ToString().Trim();
string regName = this.gridView1.GetRowCellVal(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.GetRowCellVal(e.RowHandle, this.gridView1.Columns["reg_id"]).ToString().Trim() == "" || this.gridView1.GetRowCellVal(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;
}
}