protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DropDownList2.DataSource = data.GetDataReader("select * from DepInfo");
DropDownList2.DataTextField = "Name";
DropDownList2.DataValueField = "id";
DropDownList2.DataBind();
if (Session["UserId"] == null)
{
Alert.AlertAndRedirect("对不起您没有登录", "../Login.aspx");
}
else
{
SqlDataReader dr = data.GetDataReader("select * from Users where id=" + Request.QueryString["id"].ToString());
if (dr.Read())
{
Name.Text = dr["Name"].ToString();
TName.Text = dr["TName"].ToString();
Emal.Text = dr["Emal"].ToString();
ZhiWei.Text = dr["ZhiWei"].ToString();
Tel.Text = dr["Tel"].ToString();
pic.Text = dr["Photo"].ToString();
Image2.ImageUrl = "../Photo/" + dr["Photo"].ToString();
Address.Text = dr["Address"].ToString();
Sex.Items.FindByValue(dr["Sex"].ToString()).Selected = true;//选项Text
DropDownList2.Items.FindByValue(dr["DepId"].ToString()).Selected = true;
DropDownList2.Items.FindByText(dr["DepName"].ToString()).Selected = true;
DropDownList1.Items.FindByValue(dr["Roule"].ToString()).Selected = true;
}
}
}
}
这段DropDownList2.Items.FindByText(dr["DepName"].ToString()).Selected = true;出现了未将对象引用设置到对象的实例。请问我该如何修改。