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C# winform combobox 在绑定数据之后插入一项选择项

發布時間:2025/5/22 C# 52 豆豆
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?1????????/**////?<summary>
?2????????///?填充comboboxB超醫師?geovindu@163.com?涂聚文
?3????????///2009-02-16
?4????????///?</summary>

?5????????private?void?setDBPyhNameComboBox()
?6????????{
?7
?8????????????this.combPhy.DataSource?=?null;
?9
10????????????DBConnectioin?dbc?=?new?DBConnectioin();
11????????????SqlConnection?conn?=?new?SqlConnection(DBConnectioin.conStr);
12????????????conn.Open();
13????????????//DbHelperSQL.setComboList(combPhy,?"select?PhyID,PhyName??from?Physician",?"Physician",?"PhyName",?"PhyID");
14????????????string?sSQL?=?"select?PhyID,PhyName??from?Physician";
15????????????string?sTable?=?"Physician";
16
17?
18????????????DataSet?dsCourtesy?=?new?DataSet();
19????????????SqlDataAdapter?daCourtesy?=?new?SqlDataAdapter();
20????????????DbHelperSQL.setCommand(dsCourtesy,?daCourtesy,?sSQL,?sTable);
21????????????daCourtesy.Fill(dsCourtesy);
22????????????combPhy.DataSource?=?dsCourtesy.Tables[0].DefaultView;??????????????
23????????????DataRow?dr?=?dsCourtesy.Tables[0].NewRow();
24????????????combPhy.DisplayMember?=?"PhyName";
25????????????combPhy.ValueMember?=?"PhyID";????????????
26????????????dr["PhyName"]?=?"全部";??
27????????????dr["PhyID"]?=?-1;??
28????????????dsCourtesy.Tables[0].Rows.InsertAt(dr,?0);
29????????????//combPhy.Text?=?"全部";
30
31
32????????}
ProductCatalogListBLL productCatalogListBLL = new ProductCatalogListBLL();/// <summary>/// /// </summary>/// <param name="sender"></param>/// <param name="e"></param>protected void Page_Load(object sender, EventArgs e){if (!IsPostBack){BindClass();}}/// <summary>/// /// </summary>void BindClass(){List<ProductCatalogListInfo> list = productCatalogListBLL.get_List();foreach (ProductCatalogListInfo model in list){ListItem li = new ListItem();li.Text = "╋" + model.ProductCatalogName;li.Value = model.ProductCatalogId.ToString();DropDownList1.Items.Add(li);BindChild(model.ProductCatalogId.ToString(), "├──");}}/// <summary>/// /// </summary>/// <param name="ParentID"></param>/// <param name="separator"></param>void BindChild(string ParentID, string separator){List<ProductCatalogListInfo> list = productCatalogListBLL.get_List(ParentID);foreach (ProductCatalogListInfo model in list){ListItem li = new ListItem();li.Text = separator + model.ProductCatalogName;li.Value = model.ProductCatalogId.ToString();DropDownList1.Items.Add(li);string separator_ = separator + "───";BindChild(model.ProductCatalogId.ToString(), separator_);}}

  

/// <summary>/// /// </summary>/// <returns></returns>public List<ProductCatalogListInfo> get_List(){List<ProductCatalogListInfo> List = new List<ProductCatalogListInfo>();DataTable dt = DBHelper.getDataSet("select * from ProductCatalogList where ProductCatalogParent=0 order by ProductCatalogId desc").Tables[0];foreach (DataRow dr in dt.Rows){ProductCatalogListInfo model = new ProductCatalogListInfo();model.ProductCatalogId = Convert.ToInt32(dr["ProductCatalogId"]);model.ProductCatalogName = dr["ProductCatalogName"].ToString();model.ProductCatalogParent = Convert.ToInt32(dr["ProductCatalogParent"]);List.Add(model);}return List;}/// <summary>/// /// </summary>/// <param name="ParentID"></param>/// <returns></returns>public List<ProductCatalogListInfo> get_List(string ParentID){List<ProductCatalogListInfo> List = new List<ProductCatalogListInfo>();DataTable dt = DBHelper.getDataSet("select * from ProductCatalogList where ProductCatalogParent=" + ParentID + " order by ProductCatalogId desc").Tables[0];foreach (DataRow dr in dt.Rows){ProductCatalogListInfo model = new ProductCatalogListInfo();model.ProductCatalogId = Convert.ToInt32(dr["ProductCatalogId"]);model.ProductCatalogName = dr["ProductCatalogName"].ToString();model.ProductCatalogParent = Convert.ToInt32(dr["ProductCatalogParent"]);List.Add(model);}return List;}

  

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