我用两个droplist这样做的失败了:protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
cate_bind();
}}
public void cate_bind()
{
adosql addproado = new adosql();
string sqlstr = "select category,categoryid from category";
DataSet test = addproado.todateset(sqlstr);
category.DataSource = test;
category.DataTextField = "category";
category.DataValueField = "categoryid";
category.DataBind();
//sqlstr = "select * from sorts";
//sorts.DataSource = addproado.todateset(sqlstr);
//sorts.DataTextField = "sorts";
//sorts.DataValueField = "sortsid";
//sorts.DataBind();
}
public void category_SelectedIndexChanged(object sender, EventArgs e)
{
adosql cate_chang = new adosql();
string str_chang = "select sortsid,sorts from sorts where categoryid="+category.SelectedValue.ToString();
sorts.DataSource = cate_chang.todateset("str_chang");
sorts.DataTextField = "sorts";
sorts.DataValueField = "sortsid";
sorts.DataBind();
}
}
当第一个droplist的category_SelectedIndexChanged时,第二个droplist没响应,急急..
{
if (!IsPostBack)
{
cate_bind();
}}
public void cate_bind()
{
adosql addproado = new adosql();
string sqlstr = "select category,categoryid from category";
DataSet test = addproado.todateset(sqlstr);
category.DataSource = test;
category.DataTextField = "category";
category.DataValueField = "categoryid";
category.DataBind();
//sqlstr = "select * from sorts";
//sorts.DataSource = addproado.todateset(sqlstr);
//sorts.DataTextField = "sorts";
//sorts.DataValueField = "sortsid";
//sorts.DataBind();
}
public void category_SelectedIndexChanged(object sender, EventArgs e)
{
adosql cate_chang = new adosql();
string str_chang = "select sortsid,sorts from sorts where categoryid="+category.SelectedValue.ToString();
sorts.DataSource = cate_chang.todateset("str_chang");
sorts.DataTextField = "sorts";
sorts.DataValueField = "sortsid";
sorts.DataBind();
}
}
当第一个droplist的category_SelectedIndexChanged时,第二个droplist没响应,急急..
解决方案 »
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不过这样会刷新整个页面,采用ajax技术会局部刷新。。
AJAX局部刷新能否给个简单的例子,
只知道可以实现这样的功能!!呵呵