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Graph presentation in C#

Member 9681862 asked:

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i have tried to write the coding for presenting a graph from mysql database data in C# coding but i get the error like chart1 is not excit in the current context.

I don't know how to clear the error if u have any idea please reply me

I attached the following code I did

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Web;
//using System.Web.UI;
//using System.Web.UI.WebControls;
using System.Windows.Forms.DataVisualization.Charting;
using MySql.Data.MySqlClient;
namespace WindowsFormsApplication4
    public partial class Form1 : Form
        public Form1()
            MySqlConnection con = new MySqlConnection();
            //Chart Chart1.Series["Series1"].ChartType = SeriesChartType.Column;
        private void Form1_Load(object sender, EventArgs e)
            Chart1.Series["Series1"].ChartType = SeriesChartType.Column;
            // TODO: This line of code loads data into the 'testDataSet.periodicdata' table. You can move, or remove it, as needed.
             MySqlConnection con = new MySqlConnection();
            con.ConnectionString = "server=localhost;user id=root;password=vinoth;database=test";
            MySqlCommand cmd = new MySqlCommand();
                //con.ConnectionString = "server=localhost;user id=root;password=******;database=test";
                //con.ConnectionString = "server=.\\mysqlexpress;database=test;integrated security=true;";
            catch (Exception ex) { MessageBox.Show(ex.ToString()); }

        private void button1_Click(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;
        private void FillData()
            DataTable dt = new DataTable();
            DataColumn dc;
            dc = new DataColumn();
            dc.ColumnName = "date_time";
            dc = new DataColumn();
            dc.ColumnName = "Volt1";
            Chart1.DataSource = dt;
            Chart1.Series["Series1"].XValueMember = "date_time";
            Chart1.Series["Series1"].YValueMembers = "Volt1";
            //throw new NotImplementedException();
Tags: C#, MySQL


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