动态创建的texbox值如何可见?(在邮寄中丢失)

本文关键字：创建 texbox 何可见 动态 | 更新日期: 2023-09-27 18:22:19

lnkcat是Category的链接按钮，lnksubcat是Sub-class:的链接按钮

我的问题是，当我点击lnk_cat时，会显示相应的标签和文本框。。。但我点击下一个lnk子卡将被删除。。。。我想在占位符上保留这些文本框对应的标签，直到我点击提交：

protected void lnkCat_Click(object sender, EventArgs e)
{    
    //Panel2.Visible = false;
    //Panel1.Visible = true;
    Label lblCat = new Label();
    lblCat.Text = "Enter new Category: ";
    PHcat.Controls.Add(lblCat);
    txtCat = new TextBox();
    _Cat = txtCat.Text;
    PhtxtCat.Controls.Add(txtCat);
    Session["Dynalbl"] = lblCat;
    Session["Dynatxt"] = txtCat;
}
protected void lnkSubCat_Click(object sender, EventArgs e)
{
    //Panel1.Visible = true;
    //Panel2.Visible = true;
    Label lblSubcat = new Label();
    lblSubcat.Text =  "Enter new Sub-Category: ";
    PHsubCat.Controls.Add(lblSubcat);
    txtSubCat = new TextBox();
    _SubCat = txtSubCat.Text;
    PhtxtSubCat.Controls.Add(txtSubCat);
}

有人能建议解决这个问题吗？请

谢谢。。。

动态创建的texbox值如何可见?(在邮寄中丢失)

您对此有何看法？

Label lblCat;
    Label lblSubcat;
    TextBox txtCat, txtSubCat;
    protected void lnkCat_Click(object sender, EventArgs e)
    {
        //Panel2.Visible = false;
        //Panel1.Visible = true;
        Label lblCat = new Label();
        lblCat.Text = "Enter new Category: ";
        PHcat.Controls.Add(lblCat);
        txtCat = new TextBox();
        _Cat = txtCat.Text;
        PhtxtCat.Controls.Add(txtCat);
        Session["Dynalbl"] = lblCat;
        Session["Dynatxt"] = txtCat;
    }
    protected void lnkSubCat_Click(object sender, EventArgs e)
    {
        //Panel1.Visible = true;
        //Panel2.Visible = true;
        lblCat = (Label)Session["Dynalbl"];
        txtCat = (TextBox)Session["Dynatax"];
        PHsubCat.Controls.Add(lblCat);
        PHsubCat.Controls.Add(txtCat);
        Label lblSubcat = new Label();
        lblSubcat.Text = "Enter new Sub-Category: ";
        PHsubCat.Controls.Add(lblSubcat);
        txtSubCat = new TextBox();
        _SubCat = txtSubCat.Text;
        PhtxtSubCat.Controls.Add(txtSubCat);
    }
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