Forms Data Controls :: .when Load The Page To See The Results, All I See Is A Blank Gray Rectangle. No Graph Inside?

Apr 7, 2010

i have created a .net chart, but when i load the page to see the results, all i see is a blank gray rectangle. no graph inside. (while if i split view it in VS i see the chart)here is my code,


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// How many pages of posts
int howManyPages = 1;
// pager links format
string firstPageUrl = "";
string pagerFormat = "";
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bottomPager.Show(int.Parse(page), howManyPages, firstPageUrl, pagerFormat, true);
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<asp:Label ID="currentPagelabel" runat="server" />
<asp:Label ID="howManyPageLabel" runat="server" />
<asp:HyperLink ID="previousLink" runat="server">Previous</asp:HyperLink>
<asp:Repeater ID="pagesRepeater" runat="server">
<asp:HyperLink ID="hyperlink" runat="server" Text='<%# Eval("Page") %>' NavigateUrl='<%# Eval("Url") %>' />
<asp:HyperLink ID="nextLink" runat="server">Next</asp:HyperLink>
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using System;
// Simple struct that represents a (page number, url) association
public struct PageUrl
private string page;
private string url;
// Page property definition
public string Page
return page;
// Url property definition
public string Url
return url;
// Constructor
public PageUrl(string page, string url)
{ = page;
this.url = url;
// The pager control
public partial class UserControls_Pager : System.Web.UI.UserControl
protected void Page_Load(object sender, EventArgs e)
// Show the pager
public void Show(int currentPage, int howManyPages, string firstPageUrl, string pageUrlFormat, bool showPages)
// Display paging controls
if (howManyPages > 1)
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this.Visible = true;
// Display the current page
currentPagelabel.Text = currentPage.ToString();
howManyPageLabel.Text = howManyPages.ToString();
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previousLink.Enabled = false;
previousLink.NavigateUrl = (currentPage == 2) ? firstPageUrl : String.Format(pageUrlFormat, currentPage - 1);
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nextLink.Enabled = false;
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// Create the page links
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// Retreive the list of news posts
public static DataTable GetNews(string pageNumber, out int howManyPages)
// Get a configured DbCommand object
DbCommand comm = GenericDataAccess.CreateCommand();
// Set the stored procedure name
comm.CommandText = "GetNews";
// create a new parameter for page number
DbParameter param = comm.CreateParameter();
param.ParameterName = "@PageNumber";
param.Value = pageNumber;
param.DbType = DbType.Int32;
// create a new parameter for products per page
param = comm.CreateParameter();
param.ParameterName = "@PostsPerPage";
param.Value = PlatiumMindProductionsConfiguration.PostsPerPage;
param.DbType = DbType.Int32;
param = comm.CreateParameter();
param.ParameterName = "@HowManyPosts";
param.Direction = ParameterDirection.Output;
param.DbType = DbType.Int32;
// Execute the stored procedure and saven the results in a DataTable
DataTable table = GenericDataAccess.ExecuteSelectCommand(comm);
// Calculate how many pages of posts and set the out parameter
int howManyPosts = Int32.Parse(comm.Parameters["@HowManyPosts"].Value.ToString());
howManyPages = (int)Math.Ceiling((double)howManyPosts / (double)PlatiumMindProductionsConfiguration.PostsPerPage);
// return the page of posts
return table;
my stored procedure is
(@PageNumber INT,
@PostsPerPage INT,
@HowManyPosts INT OUTPUT)
-- Declare a new table
(RowNumber INT,
Title NVARCHAR(50),
-- Populate the table with the complete list
NewsID, Title, Date, News
-- return the total number of posts
SELECT @HowManyPosts = COUNT(NewsID) FROM News
-- extract the request page of posts
SELECT NewsID, Title, DATE, News
FROM @News
WHERE RowNumber > (@PageNumber - 1) * @PostsPerPage
AND RowNumber <= @PageNumber * @PostsPerPage

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