net动态控件按保存时取值问题

heli_1005 2013-07-23 02:24:07

编辑功能： net 在后台动态添加控件，然后把给控件赋值，呈现到界面，然后修改控件的值，按保存。这个时候，得不到控件修改后的值，总是最开始赋值时候的值。这要怎么做呢？动态控件的id 可以得到，查看源文件时，id的值都是最初赋值时候的值。为什么点保存的时候，得不到修改后的值呢？



 TextBox txtXuhao { get; set; }

    DropDownList dptea { get; set; }

    TextBox txtBegin { get; set; }

    TextBox txtEnd { get; set; }

    TextBox txtCode { get; set; } 

    



    //动态生成控件

    public void CreateControl()

    {

        if (ViewState["CreateControl"] == null) return;  

        int claId = Convert.ToInt32(Request.QueryString["claID"]);

        DataSet dsDeta = tb.ShowClassDetail(claId);



        TableRow row1 = new TableRow();



        TableCell cell1 = new TableCell();

        Label la = new Label();

        la.Text = "班次序号";

        la.Width = 82;



        Label la2 = new Label();

        la2.Text = "老师";

        la2.Width = 125;



        Label la3 = new Label();

        la3.Text = "上课开始时间";

        la3.Width = 210;



        Label la4 = new Label();

        la4.Text = "下课结束时间";

        la4.Width = 210;



        Label la5 = new Label();

        la5.Text = "课程代码";

        la5.Width = 200;



        cell1.Controls.Add(la);

        cell1.Controls.Add(la2);

        cell1.Controls.Add(la3);

        cell1.Controls.Add(la4);

        cell1.Controls.Add(la5);



        row1.Cells.Add(cell1);

        HolderTable.Rows.Add(row1);



        for (int i = 0; i < dsDeta.Tables[0].Rows.Count; i++)

        {

            TableRow row = new TableRow();



            TableCell cell = new TableCell();

            txtXuhao = new TextBox();

            txtXuhao.Width = 78;

            txtXuhao.ID = "txtXuhao" + i;



            dptea = new DropDownList();

            dptea.ID = "dptea" + i;

            dptea.Width = 120;

            dptea.DataSource = teab.showTeacherProFile();

            dptea.DataTextField = "Teacher_Name";

            dptea.DataValueField = "Teacher_ID";

            dptea.DataBind();



            txtBegin = new TextBox();

            txtBegin.ID = "txtBegin" + i;

            txtBegin.Width = 200;



            txtEnd = new TextBox();

            txtEnd.ID = "txtEnd" + i;

            txtEnd.Width = 200;



            txtCode = new TextBox();

            txtCode.ID = "txtCode" + i;

            txtCode.Width = 180;



            cell.Controls.Add(txtXuhao);

            cell.Controls.Add(dptea);

            cell.Controls.Add(txtBegin);

            cell.Controls.Add(txtEnd);

            cell.Controls.Add(txtCode);



            row.Cells.Add(cell);

            HolderTable.Rows.Add(row); 



            txtXuhao.Text = dsDeta.Tables[0].Rows[i]["Class_Sequence"].ToString();

            txtBegin.Text = dsDeta.Tables[0].Rows[i]["Class_Time_Begin"].ToString();

            txtEnd.Text = dsDeta.Tables[0].Rows[i]["Class_Time_End"].ToString();

            txtCode.Text = dsDeta.Tables[0].Rows[i]["Course_Code"].ToString();



        }

    }







   static TextBox txXuhao;

  static DropDownList dpte;

 static TextBox txtBe;

static TextBox txten;

static TextBox txtco;



public void save()

{

   CreateControl();

  for (int i = 0; i < dsDeta.Tables[0].Rows.Count; i++)

                {

                     txXuhao = this.form1.FindControl("txtXuhao"+i) as TextBox;

                    int a =Convert.ToInt32(txXuhao.Text.ToString()); 



                     dpte = this.form1.FindControl("dptea" + i) as DropDownList;

                    int b =Convert.ToInt32(dpte.SelectedValue); 



                      txtBe = this.form1.FindControl("txtBegin"+i) as TextBox;

                    DateTime c = Convert.ToDateTime(txtBe.Text); 



                      txten = this.form1.FindControl("txtEnd" + i) as TextBox;

                    DateTime d = Convert.ToDateTime(txten.Text); 



                      txtco = this.form1.FindControl("txtCode" + i) as TextBox;

                    string e = txtco.Text;

}

}

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ztszhq 2013-07-23

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引用 3 楼 heli_1005 的回复:

[quote=引用 2 楼 u011096386 的回复:] 加载数据的时候有加 if(!IsPostBack) ？

我前面是这样写的，有问题，回发了，是吗？要怎么改呢[/quote] public void save() { CreateControl(); save方法还调用 CreateControl？

heli_1005 2013-07-23

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引用 2 楼 u011096386 的回复:

加载数据的时候有加 if(!IsPostBack) ？

我前面是这样写的，有问题，回发了，是吗？要怎么改呢

ztszhq 2013-07-23

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加载数据的时候有加 if(!IsPostBack) ？

heli_1005 2013-07-23

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if(!Ispostback)
{
 if (ViewState["CreateControl"] == null)
        {
            ViewState["CreateControl"] = true;
            CreateControl();
        }
}