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Has anyone got any experience of this WebChart Control?
WebChart Control for ASP.NET
I've tried the example on the site but all I get is a no image Red X. When I check the source, no src file is added to the <img> tag and when I check the WebCharts folder, where the graph image should be stored, it's empty.
I've contacted my host to check on permissions, but I don't think it's a permissions problem.
Can anyone confirm if this control works with 2.0. I believe it should do, but I've no idea why mine isn't working.
Any ideas?
webchart.aspx
webchart.aspx.vbCode:<%@ Page Language="VB" AutoEventWireup="false" CodeFile="webchart.aspx.vb" Inherits="webchart_page" %> <%@ Register TagPrefix="webchart" Namespace="WebChart" Assembly="WebChart" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="XHTML namespace" > <head runat="server"> <title>Web Chart</title> </head> <body> <form id="form1" runat="server"> <webchart:ChartControl ID="test_chart" Width="500" Height="350" ChartFormat="Jpg" runat="server" /> </form> </body> </html>
Code:Imports System.Drawing Imports System.Data Imports MySql.Data.MySqlClient Imports WebChart Partial Class webchart_page Inherits System.Web.UI.Page Sub Page_Load() Dim ds As DataSet = GetDataSet() Dim view As DataView = ds.Tables(0).DefaultView Dim chart As New SmoothLineChart() chart.Line.Color = Color.SteelBlue chart.Legend = "Value 1" chart.DataSource = view chart.DataXValueField = "Description" chart.DataYValueField = "Value1" chart.DataBind() test_chart.Charts.Add(chart) Dim chart1 As New SmoothLineChart() chart1.Line.Color = Color.Red chart1.Legend = "Value 2" chart1.DataSource = view chart1.DataXValueField = "Description" chart1.DataYValueField = "Value2" chart1.DataBind() test_chart.Charts.Add(chart1) ConfigureColors() test_chart.RedrawChart() End Sub Private Function GetDataSet() As DataSet Dim ds As New DataSet() Dim table As DataTable = ds.Tables.Add("Data") table.Columns.Add("Description") table.Columns.Add("Value1", GetType(Integer)) table.Columns.Add("Value2", GetType(Integer)) Dim rnd As New Random() Dim i As Integer For i = 0 To 20 Dim row As DataRow = table.NewRow() row("Description") = i.ToString() row("Value1") = rnd.Next(100) row("Value2") = rnd.Next(100) table.Rows.Add(row) Next Return ds End Function ' Configure some colors for the Chart, this could be done declaratively also Sub ConfigureColors() test_chart.Background.Color = Color.DarkGray test_chart.Background.Type = InteriorType.Hatch test_chart.Background.HatchStyle = System.Drawing.Drawing2D.HatchStyle.DiagonalBrick test_chart.Background.ForeColor = Color.Yellow test_chart.Background.EndPoint = New Point(500, 350) test_chart.Legend.Position = LegendPosition.Left test_chart.Legend.Width = 80 test_chart.YAxisFont.ForeColor = Color.Red test_chart.XAxisFont.ForeColor = Color.Green test_chart.ChartTitle.Text = "WebChart Control Sample" test_chart.ChartTitle.ForeColor = Color.DarkBlue test_chart.Border.Color = Color.SteelBlue test_chart.BorderStyle = BorderStyle.Ridge End Sub End Class
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