传值问题

xiaoliangzi1314 2009-11-28 06:46:37

//展示数据
public void ShowData(int id)//id值是通过传值过来的
{
S_model = B_S.Getdatabyid(id);
if (S_model != null)
{
ViewState["Sid"] = S_model.ToString();//存储整个对象
this.txtguest_company.Text = S_model.SERVER_ID.ToString();
this.txtguest_linkman.Text = S_model.GUEST_LINKMAN.ToString();
this.txtserver_Approve.Text = S_model.SERVER_APPROVE.ToString();
this.txtserver_create.Text = S_model.SERVER_CREATE.ToString();
this.txtserver_ispast.Text = S_model.SERVER_ISPAST.ToString();
this.txtserver_name.Text = S_model.SERVER_NAME.ToString();
this.txtserver_time.Text = S_model.SERVER_TIME.ToString();
this.txtuser_name.Text = S_model.USER_NAME.ToString();
this.txttypeid.Text = S_model.TYPE_ID.ToString();
this.txtservertheme.Text = S_model.SERVER_THEME.ToString();
this.txtservercontent.Text = S_model.SERVER_CONTENT.ToString();
this.txtserverid.Text = S_model.SERVER_ID.ToString();
}
// Response.Write("哼");

}上面是显示数据，已经执行了，我根据显示的数据，进行修改，却获取不到viewstate【“id”】，为什么呢？
修改代码如下：
//修改
protected void lbtnmodify_Click(object sender, EventArgs e)
{
CRM_MODEL.CRM_SERVER S_model = ViewState["id"] as CRM_MODEL.CRM_SERVER;
if (S_model != null)
{
Response.Write("dhfs");//执行了显示的内容，为什么在哪里获得值，再重新操作，会得不到那个值呢？？？？？郁闷？？？？？？？
S_model.SERVER_ID = Convert.ToInt32(this.txtserverid.Text);
S_model.SERVER_THEME = this.txtservertheme.Text.Trim();
S_model.SERVER_TIME = Convert.ToDateTime(this.txtserver_time.Text.Trim());
S_model.SERVER_NAME = this.txtserver_name.Text.Trim();
S_model.SERVER_ISPAST = Convert.ToBoolean(this.txtserver_ispast.Text.Trim());
S_model.SERVER_CREATE = this.txtserver_create.Text.Trim();
S_model.SERVER_CONTENT = this.txtservercontent.Text;
S_model.SERVER_APPROVE = this.txttypeid.Text;
S_model.GUEST_LINKMAN = this.txtguest_linkman.Text.Trim();
S_model.GUEST_COMPANY = this.txtguest_company.Text.Trim();
S_model.TYPE_ID = Convert.ToInt32(this.txttypeid.Text.Trim());
S_model.USER_NAME = this.txtuser_name.Text.Trim();
int i = B_S.B_Supdate(S_model);
if (i > 0)
{
Response.Write("<script>alert('更新成功！'):window.location.href='server.aspx'</script>");
}
else
{
Response.Write("<script>alert('更新失败！')</script>");
}
}
else
{
Response.Write("没有找到相关内容！");

}

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