问题描述
受保护的无效Page_Load(对象发送者，EventArgs e)
{
Loademployeegeofencee(strUnitNo);
}
私有void Loademployeegeofencee(object strUnitNo)
{
//这里我将值从数据库加载到下拉列表"Superuserid1"
//这很好用
}
受保护的void Superuserid1_SelectedIndexChanged(对象发送者，EventArgs e)
{
字符串st;
st = Superuserid1.SelectedItem.value;
//要执行的代码
}
这里的问题是，当我在st中设置断点时，其显示为null，该值不在st
protected void Page_Load(object sender, EventArgs e)
{
Loademployeegeofencee(strUnitNo);
}
private void Loademployeegeofencee(object strUnitNo)
{
//here i load the value from the database to the dropdownlist "Superuserid1"
//this works fine
}
protected void Superuserid1_SelectedIndexChanged(object sender, EventArgs e)
{
string st;
st=Superuserid1.SelectedItem.value;
//code to be executed
}
the issue here is when i set the break point in st its showing null the value is not coming inside st
推荐答案
if (!IsPostBack)
{
Loademployeegeofencee(strUnitNo);
}
st=Superuserid1.Text.ToString()
或仅
or only
st=Superuserid1.Text
void Superuserid1_SelectedIndexChanged(object sender, EventArgs e)
{
string s=Superuserid1.SelectedValue;
}
这篇关于我无法从下拉列表中检索值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！