display all data in a table from sql in asp.net using C#

Question

i'm just learning asp.net with c#. with the little knowledge of php, i think i'm able to do somethings but i'm having problem displaying records from my database.

i have a table called resources, what i want to do is output all the data in the table. this is the output i want to write in c# in php...

<?php
while($row = mysql_fetch_object($tablename))
{
   echo "<tr><td>$row->image</td><td><a href='#'>download link</a></td><a href='http://'".$row->url."'>'".$row->url."'</a></tr>";
}
?>

basically i don't have problem with the php but i want the output this code will give me same in C#(with image, download link, and url in a table). Please help,...

i have this code in c# to output data in a label control

var cmd = new MySqlCommand("SELECT * FROM resources");
Knct dal = new Knct();
MySqlDataReader dr = dal.DatareaderMethod(cmd, Knct.executemethods.ExecuteReader);
while (dr.Read())
{
  label1.Text = dr[2].ToString();
}

the while loop is not working, it only display one value. how do i make this a display all records in the database and which asp control can i use to output the records and also make a url link in the table output.

Answer 1

If you're using ASP.Net, a repeater is preferred for simple displays.

In your code behind (or server-side), you'll have to bind the data to the repeater:

   ...
   m_Repeater.DataSource = GetImages();  //Function that returns Image records
   m_Repeater.DataBind();
   ...

The mark up on your ASPX page will look something like:

<asp:Repeater id="m_Repeater" runat="server">
  <HeaderTemplate>
    <table>
      <tr>
        <td>Image</td>
        <td>Link</td>
        <td>Url</td>
      </tr>
  </HeaderTemplate>
  <ItemTemplate>
      <tr>
        <td><img src='<%# Container.DataItem("ImageSrc") %>'/></td>
        <td><a href='<%# Container.DataItem("DownloandLink") %>'>Download Link</a></td>
        <td><a href='<%# Container.DataItem("ImageUrl") %>'>Url</a></td>
      </tr>
  </ItemTemplate>
  <FooterTemplate>
     </table>
  </FooterTemplate>
</asp:Repeater>

ASP.Net MVC

If you're using ASP.Net MVC you can use the Razor syntax, it's more elegant. Assuming Model is strongly-typed to an enumerable list of Image objects, the markup on your view page might look something like:

@foreach(var image in Model)
{
   <tr>
     <td><img src='@image.ImageSrc'/></td>
     <td><a href='@image.DownloadLink'>Download Link</a></td>
     <td><a href='@image.ImageUrl'>Url</a></td>
   </tr>
}

Some useful Articles/Resources:

• MSDN - Repeater
• DotNetcurry - Razor

Answer 2

If this is webforms, you can use a repeater to display each of your values. It'd look something like this:

aspx:
<asp:Repeater ID="repeater" runat="server">
    <ItemTemplate>
        <div><%# Eval("columnName")%></div>
    </ItemTemplate>
</asp:Repeater>

aspx.cs:
repeater.DataSource = dr;
repeater.DataBind();

Think of it as a for loop.

Answer 3

Use like this

<asp:GridView ID="grdPivot" runat="server" AutoGenerateColumns="True">
</asp:GridView>


<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:MySql %>" ProviderName="<%$ ConnectionStrings:MySql.ProviderName %>" SelectCommand="SELECT * FROM resources"></asp:SqlDataSource>

This is the simplest way to bind data to a gridview or any other data control.