C#代码给DropDownList的DataTextField属性绑定两个字段----2010年01月03日

Posted 2022-06-02 mej1314

给DropDownList的DataTextField属性绑定两个字段

 

方法1：在SQL查询语句中拼接字段

 

C#代码

1. using (SqlConnection conn = new SqlConnection("server=(local);database=Northwind;user id=sa;password=sa;min pool size=4;max pool size=100;Connection Lifetime=30;"))   
2.   
3.      SqlDataAdapter adapter1 = new SqlDataAdapter("Select Top 10 ProductId,ProductName+‘,‘+convert(nvarchar,UnitPrice) Text FROM Products", conn);   
4.      DataTable table1 = new DataTable();   
5.      adapter1.Fill(table1);   
6.   
7.      DropDownList1.DataSource = table1.DefaultView;   
8.      DropDownList1.DataTextField = "Text";   
9.      DropDownList1.DataValueField = "ProductId";   
10.      DropDownList1.DataBind();   
11.   

 

 

 

方法2：在DataTable中新增一字段

 

 

C#代码

1. using (SqlConnection conn = new SqlConnection("server=(local);database=Northwind;user id=sa;password=sa;min pool size=4;max pool size=100;Connection Lifetime=30;"))   
2.   
3.      SqlDataAdapter adapter1 = new SqlDataAdapter("Select Top 10 ProductId,ProductName,UnitPrice FROM Products", conn);   
4.      DataTable table1 = new DataTable();   
5.      adapter1.Fill(table1);   
6.   
7.      table1.Columns.Add("Text", System.Type.GetType("System.String"), "ProductName+‘-‘+UnitPrice");   
8.   
9.      DropDownList1.DataSource = table1.DefaultView;   
10.      DropDownList1.DataTextField = "Text";   
11.      DropDownList1.DataValueField = "ProductId";   
12.      DropDownList1.DataBind();   
13.