dropdownlist数据绑定的问题
protected void Page_Load(object sender, EventArgs e)
{
DataClassesDataContext dcdc = new DataClassesDataContext(ConfigurationManager.ConnectionStrings["db_16ConnectionString"].ConnectionString.ToString());
var result = from r in dcdc.Leaveword
select new
{
id = r.id,
title = r.Title,
};
ddl1.DataSource = result;
ddl1.DataTextField = "title";
ddl1.DataValueField = "id";
ddl1.DataBind();
}
protected void btnChange_Click(object sender, EventArgs e)
{
DataClassesDataContext dcdc = new DataClassesDataContext(ConfigurationManager.ConnectionStrings["db_16ConnectionString"].ConnectionString.ToString());
int id =Convert.ToInt32(ddl1.SelectedValue);
Response.Write(id.ToString());
//var result = from r in dcdc.Leaveword
// where r.id == id
// select r;
//foreach (Leaveword lw in result)
//{
// lw.Message = txtMessage.Text;
//}
//dcdc.SubmitChanges();
//Response.Write("<script language=javascript>alert('修改成功！')</script>");
}
为什么输出的总是1 难道dropdownlist值没有正确绑定吗 ？
[最优解释]
if(!IsPostBack) 啊
为什么PageLoad总不喜欢加这一句呢
[其他解释]
我也有数据绑定的问题，是gridview中某列是dropdownlist，我在databind（）的时候报错，你看看能帮我解决么？
http://bbs.csdn.net/topics/390307128
[其他解释]
select new
{
id = r.id,
title = r.Title,
};
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
var linq = from a in _Article
select new { a.ArticleID };
DropDownList5.DataSource = linq;
DropDownList5.DataTextField = "ArticleID";
DropDownList5.DataValueField = "ArticleID";
DropDownList5.DataBind();
}
}
