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Monday 6 August 2012

Asp.Net Bind MSChart with Dataset and handle Click event of the chart

03:51 Unknown


Introduction       
                  
        This tutorial uses the new MS Chart click event to render a column graph from a Data Table in C# and ASP.NET 2.0 to 4.0

Description
In this tutorial, we will be looking at the new addition to the .NET Framework, MS Charts click event. We will be rendering a bar chart from a Data Table and then click event of that bar chart, and show just how easy.
Before we begin anything, and even start up Visual Studio.NET, we first need to download and install the Chart extension. You can download from the above web address, and the install is a quick process - consisting of two axes. Once installed, we can start up Visual Studio and create a new Web Application. Then the first thing to do is add two references in the Web.config:
In system.web/http Handlers, add the following:
<httpHandlers>
      <add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false" />
    </httpHandlers>





Downloads  
You can download the complete source code in Asp.net C# 
 

Wednesday 1 August 2012

Asp.Net Column Chart from DataTable in MSChart C#

02:02 Unknown


Introduction                          
        This tutorial uses the new MS Chart to render a column graph from a Data Table in C# and ASP.NET 2.0 to 4.0
Description

In this tutorial, we will be looking at the new addition to the .NET Framework, MS Charts. We will be rendering a bar graph from a Data Table, and show just how easy Microsoft make it for us to do so. We can use the Chart control like other ASP.NET data controls, and assign it a data source.
Please note that MS Chart will not work in ASP.NET 2.0 and below. If you are working within 3.5 or 4.0, then you can download the MS Chart extension at the following
We will programmatically instantiate and populate a Data Table on page load. In a real-world application, the chart would be fed with data from an external source, like a database or XML file.
There is not just one way to render a Chart in ASP.NET. Using MS Chart, we can either give it a data source like any other data control or we can loop through the data values and plot each point on the graph individually. In this example, we will show you both ways.

Before we begin anything, and even start up Visual Studio.NET, we first need to download and install the Chart extension. You can download from the above web address, and the install is a quick process - consisting of two axes.Once installed, we can start up Visual Studio and create a new Web Application. Then the first thing to do is add two references in the Web.config:
In system.web/http Handlers, add the following:
For .net framework 3.0 and 3.5
<httpHandlers>
      <add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false" />
</httpHandlers>

For .net framework 4.0
<httpHandlers>
      <add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false" />
    </httpHandlers>

<%@ PageLanguage="C#"AutoEventWireup="true"CodeFile="Default.aspx.cs"Inherits="_Default"%>

<%@ RegisterAssembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
    Namespace="System.Web.UI.DataVisualization.Charting"TagPrefix="asp"%>

<!DOCTYPE htmlPUBLIC "-//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></title>
</head>
<body>
    <formid="form1"runat="server">
    <div>
        <asp:Button ID="but_LoadData" runat="server" Text="Load Data"   OnClick="but_LoadData_OnClick" />
        <br />
        <br />
        <asp:Chart ID="Chart1" runat="server">
            <Series>
                <asp:Series Name="Series1">
                </asp:Series>
            </Series>
            <ChartAreas>
                <asp:ChartArea Name="ChartArea1">
                </asp:ChartArea>
            </ChartAreas>
        </asp:Chart>
    </div>
    </form>
</body>
</html>


using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
usingSystem.Web.UI.DataVisualization.Charting;

public partialclass _Default: System.Web.UI.Page
{
    protected voidPage_Load(object sender, EventArgs e)
    {

    }
    protected voidbut_LoadData_OnClick(object sender, EventArgs e)
    {
        Chart1.Series["Series1"].ChartType = SeriesChartType.Column;
        Chart1.Series["Series1"]["DrawingStyle"] = "Emboss";
        Chart1.ChartAreas["ChartArea1"].Area3DStyle.Enable3D = true;
        Chart1.Series["Series1"].IsValueShownAsLabel = true;

        FillData();
    }

    private voidFillData()
    {
        DataTabledt = new DataTable();
        DataColumndc;

        dc = newDataColumn();
        dc.ColumnName = "Name";
        dt.Columns.Add(dc);
        dc = newDataColumn();
        dc.ColumnName = "Age";
        dt.Columns.Add(dc);

        DataRowdr;
        dr = dt.NewRow();
        dr["Name"] = "Sunil Gurjar";
        dr["Age"] = "27";
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr["Name"] = "Anil Kumar";
        dr["Age"] = "32";
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr["Name"] = "Amit Kumar";
        dr["Age"] = "35";
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr["Name"] = "Narendra";
        dr["Age"] = "32";
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr["Name"] = "Sudhir";
        dr["Age"] = "16";
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr["Name"] = "Pooja";
        dr["Age"] = "25";
        dt.Rows.Add(dr);

        Chart1.DataSource = dt;
        Chart1.Series["Series1"].XValueMember = "Name";
        Chart1.Series["Series1"].YValueMembers = "Age";
        Chart1.DataBind();
    }
}

Downloads  
You can download the complete source code in Asp.net C# 
 

Error executing child request for ChartImg.axd

01:47 Unknown


Introduction                          
        Error executing child request for ChartImg.axd.
Description

 An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: Error executing child request for ChartImg.axd.

Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[HttpException (0x80004005): Error executing child request for ChartImg.axd.]
   System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) +2998443
   System.Web.HttpServerUtility.Execute(String path, TextWriter writer, Boolean preserveForm) +842
   System.Web.UI.DataVisualization.Charting.ChartHttpHandler.EnsureInitialized(Boolean hardCheck) +250
   System.Web.UI.DataVisualization.Charting.Chart.GetImageStorageMode() +24
   System.Web.UI.DataVisualization.Charting.Chart.get_CurrentImageLocation() +40
   System.Web.UI.DataVisualization.Charting.Chart.Render(HtmlTextWriter writer) +306
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +208
   System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +173
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +31
   System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) +53
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +40
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +208
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +8
   System.Web.UI.Page.Render(HtmlTextWriter writer) +29
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3060


Solution
For .net framework 3.0 and 3.5
<httpHandlers>
      <add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false" />
</httpHandlers>

For .net framework 4.0
<httpHandlers>
      <add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false" />
    </httpHandlers>

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