Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

How to use user control in a repeater

Posted on 2009-07-15
2
Medium Priority
?
408 Views
Last Modified: 2013-11-05
I have created a user control in ASP.NET that contains 11 different gridviews, each intended to display a different set of people (like a depth chart).  I also have a dropdownlist with 30 items, where each item would have different people in the gridview.  How does one go about using the repeater control to accomplish this?

Adding to the fun:  In the codebehind for the control, I am doing formatting on each entry based upon certain criteria (basically, changing the font color if certain conditions are met).
0
Comment
Question by:houstonastros
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 20

Accepted Solution

by:
ddayx10 earned 500 total points
ID: 24865405
1) Setup a databinding routine for your gridview(s)
2) Set dropdownlist property autopostback=true
3) Add selectedindexchanged event to dropdownlist
4) In selectedindexchanged event use the value and/or text to get new data and re-bind to gridview(s).

There's a sample that does that here:
http://www.experts-exchange.com/Programming/Languages/.NET/Q_24481708.html

I'll also past the code below (see snippet).
****ASPX PAGE (could just as easily be ASCX page)****
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
	<form id="form1" runat="server">
	<span>New Title: </span>
	<asp:TextBox ID="txtTitle" runat="server" />
	<asp:Button ID="Button1" runat="server" Text="Add Record" OnClick="Button1_Click" />
	<span>Adds a record to the database.</span>
	<p style="margin: 5px 0px; padding: 0px;">
		Dropdown bound to available id values in database table.</p>
	<asp:DropDownList ID="ddl1" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddl1_SelectedIndexChanged">
	</asp:DropDownList>
	<p style="margin: 5px 0px; padding: 0px;">
		GridView shows items with id equal to dropdownlist selected value.</p>
	<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="true">
	</asp:GridView>
	
	</form>
</body>
</html>
 
 
****CODE BEHIND****
using System.Data.SqlClient;
 
public partial class Default4 : System.Web.UI.Page
{
    public string connStr
    {
        get
        {
            string conn = ConfigurationManager.ConnectionStrings["conn"].ToString();
            return conn;
 
        }
    }
 
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            bindToDDL();
            bindToGrid();
        }
 
 
    }
 
    protected void ddl1_SelectedIndexChanged(object sender, EventArgs e)
    {
        bindToGrid();
    }
 
    private void bindToDDL()
    {
        SqlConnection conn = new SqlConnection(connStr);
        SqlCommand cmd = new SqlCommand("SELECT catID,title FROM roLIST", conn);
        conn.Open();
        SqlDataReader dr = cmd.ExecuteReader();
        ddl1.DataTextField = "title";
        ddl1.DataValueField = "catID";
        ddl1.DataSource = dr;
        ddl1.DataBind();
        dr.Close();
        conn.Close();
        conn.Dispose();
        
    }
 
 
    private void bindToGrid()
    {
        SqlConnection conn = new SqlConnection(connStr);
        SqlCommand cmd = new SqlCommand("SELECT * FROM roLIST WHERE catID = @choice",conn);
        cmd.Parameters.Add(new SqlParameter("@choice", Convert.ToInt32(ddl1.SelectedValue)));
        conn.Open();
        SqlDataReader dr = cmd.ExecuteReader();
        GridView1.DataSource = dr;
        GridView1.DataBind();
        dr.Close();
        conn.Close();
        conn.Dispose();
    }
 
    protected void Button1_Click(object sender, EventArgs e)
    {
        SqlConnection conn = new SqlConnection(connStr);
        SqlCommand cmd = new SqlCommand("INSERT INTO roLIST (title, listOrder) VALUES(@title, @listOrder)", conn);
        cmd.Parameters.Add(new SqlParameter("@title", txtTitle.Text.ToString()));
        cmd.Parameters.Add(new SqlParameter("@listOrder", Convert.ToInt32(ddl1.Items.Count)+1));
        conn.Open();
        cmd.ExecuteNonQuery();
        conn.Close();
        conn.Dispose();
        bindToDDL();
        bindToGrid();
 
    }
}

Open in new window

0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

One of the pain points with developing AJAX, JavaScript, JQuery, and other client-side behaviors is that JavaScript doesn’t allow for cross domain request for pulling content. For example, JavaScript code on www.johnchapman.name could not pull conte…
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
Video by: ITPro.TV
In this episode Don builds upon the troubleshooting techniques by demonstrating how to properly monitor a vSphere deployment to detect problems before they occur. He begins the show using tools found within the vSphere suite as ends the show demonst…
In a question here at Experts Exchange (https://www.experts-exchange.com/questions/29062564/Adobe-acrobat-reader-DC.html), a member asked how to create a signature in Adobe Acrobat Reader DC (the free Reader product, not the paid, full Acrobat produ…

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question