Question

值不能为空。 参数名: String

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) {
int sortid = int.Parse(Request.QueryString["sortid"]);
ArticleSort articlesort = ArticleSortDAL.GetArticleSortByID(sortid);
this.tbSortid.Text = sortid.ToString();
this.tbName.Text = articlesort.Name;
this.tbDescription.Text = articlesort.Description;
this.tbName.Focus();

}

那个大虾指点一下应该怎么纠正啊……

Answer 1

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) {
if (Request.QueryString["sortid"]!=null)
{
int sortid = int.Parse(Request.QueryString["sortid"]);
ArticleSort articlesort = ArticleSortDAL.GetArticleSortByID(sortid);
this.tbSortid.Text = sortid.ToString();
this.tbName.Text = articlesort.Name;
this.tbDescription.Text = articlesort.Description;
this.tbName.Focus();

}
}