C# 如何使用Request.queryString从一个页面显示到另一个页面？

我想根据ddlCat和DDLSubatDropDownList的选择，将Manage-Cat-Subcat.aspx从Mainpage.aspx重定向到显示panel1和panel2

重定向到Manage-Cat-Subcat.aspx页面以显示Panel1：

重定向到Manage-Cat-Subcat.aspx页面以显示Panel2：

这就是我在Manage-Cat_Subcat.aspx中尝试根据“Register”中的值显示的内容

谢谢

在ManageCat-SubCat.aspx中，您可以检查Request.QueryString[Register]的值，并根据该值设置Panel2和Panel1的可见性

protected void Page_Load(object sender, EventArgs e)
{
    bool visible = Request.QueryString["Register"] == "pnlCat";

    Panel1.Visible = visible;
    Panel2.Visible = !visible;
 }

主页

Manage-Cat-Subcat.aspx

---

谢谢Sasidharan Chandran！

protected void ddlsubcat_SelectedIndexChanged(object sender, EventArgs e)

{
    if (ddlsubcat.SelectedItem.Text == "Other...")
    {
        Response.Redirect("ManageCat-SubCat.aspx?Register=pnlSubCat");

    }

}

protected void Page_Load(object sender, EventArgs e)
{
    if (Request.QueryString["Register"] = pnlCat)
    {
        Panel1.Visible = true;
    }
    else if (Request.QueryString["Register"] = pnlSubCat)
    {
        Panel2.Visible = true;
    }

protected void Page_Load(object sender, EventArgs e)
{
    bool visible = Request.QueryString["Register"] == "pnlCat";

    Panel1.Visible = visible;
    Panel2.Visible = !visible;
 }

protected void ddlcat_SelectedIndexChanged(object sender, EventArgs e)
{
    if (ddlcat.SelectedItem.Text == "Other...")
    {
        Response.Redirect("ManageCat-SubCat.aspx?Register=pnlCat");
    }
}

protected void ddlsubcat_SelectedIndexChanged(object sender, EventArgs e)

{
    if (ddlsubcat.SelectedItem.Text == "Other...")
    {
        Response.Redirect("ManageCat-SubCat.aspx?Register=pnlSubCat");

    }

}

protected void Page_Load(object sender, EventArgs e)
{
panel1.visible=false;
panel2.visible=false;
if(Request.QueryString["Register"]=="pnlCat")
{
panel1.visible=true;
}
if(Request.QueryString["Register"]=="pnlSubCat")
{
panel2.visible=true;
}
}