用户控件代码如下,就是页面放一个DropDownList ,然后将数据库中的值付给他。
问题是我在页面使用改用户控件,如何给这个控件动态赋默认值,类似于this.DropDownList .selectedValue="值";这种形式<asp:DropDownList ID="ddlTemplateCategory" onchange="getTemplateBind(this.value);" runat="server">
</asp:DropDownList>
public partial class template_selected : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
this.BindCategory();
}
}
protected void BindCategory()
{
cms_template_category_DAL DAL = new cms_template_category_DAL();
DataTable dt = DAL.GetList().Tables[0];
ddlTemplateCategory.DataSource = dt;
ddlTemplateCategory.DataTextField = "template_category_name";
ddlTemplateCategory.DataValueField = "template_category_id";
ddlTemplateCategory.DataBind();
if (ddlTemplateCategory.Items.Count > 0)
{
ddlTemplateCategory.Items.Insert(0, new ListItem("——请选择——", "0"));
ddlTemplateCategory.Items[1].Selected = true;
}
}
}
问题是我在页面使用改用户控件,如何给这个控件动态赋默认值,类似于this.DropDownList .selectedValue="值";这种形式<asp:DropDownList ID="ddlTemplateCategory" onchange="getTemplateBind(this.value);" runat="server">
</asp:DropDownList>
public partial class template_selected : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
this.BindCategory();
}
}
protected void BindCategory()
{
cms_template_category_DAL DAL = new cms_template_category_DAL();
DataTable dt = DAL.GetList().Tables[0];
ddlTemplateCategory.DataSource = dt;
ddlTemplateCategory.DataTextField = "template_category_name";
ddlTemplateCategory.DataValueField = "template_category_id";
ddlTemplateCategory.DataBind();
if (ddlTemplateCategory.Items.Count > 0)
{
ddlTemplateCategory.Items.Insert(0, new ListItem("——请选择——", "0"));
ddlTemplateCategory.Items[1].Selected = true;
}
}
}
public string ddlValue
{
get{return ddlTemplateCategory.SeletedValue;}
set{ddlTemplateCategory.SeletedValue=value;}
}
记得ViewState 保存状态
{
DropDownList1.Items.Add(dw.Rows[j]["SysName"].ToString());
}
{
get{return ddlTemplateCategory.SeletedValue;}
set{ddlTemplateCategory.SeletedValue=value;}
}调用的时候设置默认值(假设调用后ID为UC_drop)自己在后台就可以 UC_drop.ddlValue="..";勒也可以拖放的时候直接添加指定默认值的看需要勒