CODEWITHSUNDEEP
c#asp.net
eric
eric

Reputation: 57

Set DropDownList value by selected item

I'm new to asp.net and c#. I'm trying to set the text in the dropdownlist box to display the current page title, but I cannot get it to work. Can someone advise as to how to do it based on the code below? Thanks!

    if (!Page.IsPostBack)
    {
        string path = @"C:\Websites\TaxMapCS";
        DirectoryInfo di = new DirectoryInfo(path);
        FileSystemInfo[] fi = di.GetFiles("*.aspx");
        var result = string.Join(",", fi.OrderByDescending(f => f.CreationTime).Select(i => i.ToString()).ToArray());

        DropDownList1.DataSource = result.Replace(".aspx", "").Split(',');

        DropDownList1.DataBind();

        DropDownList1.Items.Insert(0, new ListItem("Select Edition", ""));

    }
}

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    Response.Redirect(DropDownList1.SelectedItem.Value + ".aspx");
}

Upvotes: 0

Views: 2555

Answers (4)

afzalulh
afzalulh

Reputation: 7943

Try this:

if (!Page.IsPostBack)
    {
        string path = @"C:\Websites\TaxMapCS";
        DirectoryInfo di = new DirectoryInfo(path);
        FileSystemInfo[] fi = di.GetFiles("*.aspx");
        var result = string.Join(",", fi.OrderByDescending(f => f.CreationTime).Select(i => i.ToString()).ToArray());

        DropDownList1.DataSource = result.Replace(".aspx", "").Split(',');

        DropDownList1.DataBind();

        DropDownList1.Items.Insert(0, new ListItem("Select Edition", ""));
        DropDownList1.Items.Insert(0, new ListItem(Page.Title, ""));

    }
}


    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        if(DropDownList1.SelectedIndex > 0)//do not redirect if 'Selected Edition' is selected
        {
            Response.Redirect(DropDownList1.SelectedItem.Text + ".aspx");
        }
    }

Upvotes: 0

FreddieH
FreddieH

Reputation: 813

Try this

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    Response.Redirect(DropDownList1.SelectedItem.Text + ".aspx");
}

Or

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    Response.Redirect(DropDownList1.SelectedValue + ".aspx");
}

Upvotes: 2

Win
Win

Reputation: 62260

You do not need to split and join strings. Instead you can add individual ListItem to DropDownList.

<asp:DropDownList runat="server" ID="DropDownList1" AutoPostBack="True" 
    OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged" />

protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
        string path = @"C:\DevelopmentArchive\TelerikDemo\TelerikDemo";
        DirectoryInfo di = new DirectoryInfo(path);
        FileInfo[] files = di.GetFiles("*.aspx");

        foreach (var file in files.OrderByDescending(f => f.CreationTime))
            DropDownList1.Items.Add(new ListItem(file.Name.Replace(".aspx", ""), file.Name));

        DropDownList1.Items.Insert(0, new ListItem("Select Edition", ""));
    }
}

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    Response.Redirect(DropDownList1.SelectedItem.Value);
}

Upvotes: 0

Josh Grosso
Josh Grosso

Reputation: 2114

I'm not sure about ASP.NET, but in regular C#, I think you can try something like this:

DropDownList1.Items.Add(this.Page.Title);

Thanks to Cubicle.Jockey for helping me with the code.

Upvotes: 0

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