asp.net保管箱值“固定"到零索引 [英] asp.net dropbox value 'sticks' to zero index

问题描述

好吧，标题说明了一切，
而且我不是基于Web的开发的英雄

我在page_load填充了一个字典:

well, the title says it all,
and i am not a hero with webbased development

i got an dictionary thats been filled at the page_load :

protected void Page_Load(object sender, EventArgs e)
{
    Dictionary<int, string> values = new Dictionary<int, string>();
    values.Add(0, "Value1");
    values.Add(1, "Value2");
    
    //crebotbox is a dropdownbox
    Crebotbox.DataSource = values;
    Crebotbox.DataTextField = "Value";
    Crebotbox.DataValueField = "Key";
    Crebotbox.DataBind();

}

并且其设定值必须与字符串查询一起传递到下一页

and its suposed value must pass with the string query through the next page

protected void submitbtn_Click(object sender, EventArgs e)
{
    Response.Redirect(string.Format("~/testpage.aspx?curnmr={0}&crb={1}", Curnmrtbox.Text, Crebotbox.SelectedItem.Value));
}

但无论我在页面本身上选择哪个值，它都会不断推动Dropbox的第一个值

我曾尝试切换Autopostback属性，但这是徒劳的.

but no matter wich value i select on the page itself, it just keeps pushing the first value of the dropbox

i have tried switching the Autopostback atribute but that was fruitless.

does someone have an idea?

推荐答案

更正了您的代码....

Corrected your code....

protected void Page_Load(object sender, EventArgs e)
{
    Dictionary<int,> values = new Dictionary<int,>();
    values.Add(0, "Value1");
    values.Add(1, "Value2");
    
    //crebotbox is a dropdownbox
    if(!Page.IsPostback)
    {
    Crebotbox.DataSource = values;
    Crebotbox.DataTextField = "Value";
    Crebotbox.DataValueField = "Key";
    Crebotbox.DataBind();

    } 
}

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