在ASP.net中创建一个动态DropdownList [英] Create a Dynamic DropdownList in ASP.net

问题描述

我想在按钮中创建一个动态下拉列表单击事件和具有

相同值的下拉菜单

我试过但没有用

I Want to Create a Dynamic Dropdown list in the button Click Event and the drop downs having the
same values
I Have tried this but no use

protected void btnSet_Click(object sender, EventArgs e)
    {
        foreach (TableRow tr in tbl.Controls )
        {
            foreach (TableCell tc in tr.Controls)
            {
                if (tc.Controls[0] is DropDownList)
                {
                           
                }
            }
           
        }
               
    }

下拉列表值相同。但只有点击按钮才能创建下拉菜单

活动。



请建议我获得解决方案



先谢谢

the Dropdown list values are same. But the drop downs will create only in the button click
Event.

Please Suggest me to get the Solution

Thanks in Advance

推荐答案

假设您有字符串列表并需要创建动态DropDownList

assume you have list of strings and need to create dynamic DropDownList

DropDownList ddl= new DropDownList();
foreach (string item in stringList){
    ddl.Items.Add(new ListItem(item));
}
form1.Controls.Add(ddl);

如果你需要绑定数据表

if you need to bind datatable

DropDownList ddl= new DropDownList();
ddl.DataSource = ddl
ddl.DataValueField = "value field name"
ddl.DataTextField = "textfield name"
form1.Controls.Add(ddl);
ddl.DataBind()

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