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How to bind the SQL Database to WPF Charts?

Platform: WPF |
Control: SfChart |
Published Date: June 4, 2020 |
Last Revised Date: June 4, 2020

This article explains how to establish the SQL connection and bind the retrieving data from database in a step by step process.

Step 1: Retrieve the data table from the SQL DataSet using the connection string.

    public class ViewModel
    {
        public ViewModel()
        {
            try
            {
                SqlConnection thisConnection = new SqlConnection(ConnectionString);
                thisConnection.Open();
                string Get_Data = "SELECT * FROM ChartData";
                SqlCommand cmd = thisConnection.CreateCommand();
                cmd.CommandText = Get_Data;
                SqlDataAdapter sda = new SqlDataAdapter(cmd);
                DataSet ds = new DataSet();
                sda.Fill(ds);
                var table = ds.Tables[0];
                this.DataTable = table;
            }
            catch
            {
                MessageBox.Show("DataBase Error");
            }
        }
 
        public object DataTable { get; set; }
 
        public static string ConnectionString
        {
            get
            {
                string currentDir = System.Environment.CurrentDirectory;
                currentDir = currentDir.Substring(0, currentDir.Length - 10) + "\\LocalDataBase";
                 return @"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=" + currentDir + @"\SeriesItemsSource.mdf;Integrated Security=True";
            }
        }
    }

 

Step 2: In the main page, initialize the SfChart control and bind the retrieved data.

<Grid>
        <Grid.DataContext>
            <local:ViewModel></local:ViewModel>
        </Grid.DataContext>        
        
        <chart:SfChart Margin="10">
            
            <chart:SfChart.PrimaryAxis>
                <chart:NumericalAxis RangePadding="Additional"/>
            </chart:SfChart.PrimaryAxis>
 
            <chart:SfChart.SecondaryAxis>
                <chart:NumericalAxis RangePadding="Additional"/>
            </chart:SfChart.SecondaryAxis>
 
            <chart:ScatterSeries ItemsSource="{Binding DataTable}"
                                 XBindingPath="xVal" 
                                 YBindingPath="yVal"/>
        </chart:SfChart>  
        
</Grid>

 

SQL DataBinding to SfChart

 

Download complete sample here

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