将文本框动态添加到c#.net

时间:2015-08-18 19:57:34

标签: c# asp.net .net

我有一个.net网络应用程序,c#backend,sql server数据层。我有一个asp:checkboxlist,我通过直接数据绑定从存储过程填充:

ASP.net

<asp:CheckBoxList ID="cblMyPlans" runat="server" RepeatColumns="4">
</asp:CheckBoxList>

C#

SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["SQLConn"].ToString());
SqlCommand cmd = new SqlCommand("SelectMyPlans", conn);
cmd.CommandType = CommandType.StoredProcedure;
conn.Open();

using(SqlDataReader dr = cmd.ExecuteReader()) {
    while (dr.Read()) {
        cblMyPlans.Items.Add(new ListItem(dr["Name"].ToString(), dr["PlanID"].ToString()));

    }
}
conn.Close();
conn.Dispose();

我不确定它是否可能,但基于SqlDataReader出来的某个标志,我需要动态地向cbl的每个项添加一个小textbox以满足该标志

如何在asp:TextBox

期间动态添加databind

1 个答案:

答案 0 :(得分:2)

您可以使用“手动”元素动态添加CheckBoxList。

此代码将创建与CheckBoxList相同的html,但您可以根据需要添加其他元素......

代码背后:

public void FillPH()
    {
        var MyList = new List<ListItem>
        {
            new ListItem("One", "1"),
            new ListItem("Two", "2"),
            new ListItem("Three", "3")
        };

        Table myTable = new Table();

        foreach (var item in MyList)
        {
            //Create new checkbox
            CheckBox CB = new CheckBox();
            CB.Text = item.Text;
            CB.ID = item.Value;

            //Create tablr row and td, then adds them accordignly
            TableRow TR = new TableRow();
            TableCell TD = new TableCell();
            TD.Controls.Add(CB);
            TR.Controls.Add(TD);

            //IF <YOUR FLAG GOES HERE>-->
            if (item.Value == "2")
            {
                //Create your input element and place it in a new Table cell (TD2)
                TextBox TB = new TextBox();
                TB.ID = string.Format("tb_{0}", item.Value);
                TableCell TD2 = new TableCell();
                TD2.Controls.Add(TB);
                TR.Controls.Add(TD2);
            }

            myTable.Controls.Add(TR);
        }

        fillMe.Controls.Add(myTable);
    }

前:

 <div>
      <asp:PlaceHolder ID="fillMe" runat="server"></asp:PlaceHolder>
 </div>