Display Y-Axis value in MS Chart using C# in ASP.Net

Hi theunclevince,

Refer below sample code.

HTML

<asp:Chart ID="Chart1" runat="server" Height="300px" Width="600px">
    <Titles>
        <asp:Title ShadowOffset="3" Name="Items" />
    </Titles>
    <Series>
        <asp:Series Name="Default" />
    </Series>
    <ChartAreas>
        <asp:ChartArea Name="ChartArea1" BorderWidth="0" />
    </ChartAreas>
</asp:Chart>

Namespaces

using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Web.UI.DataVisualization.Charting;
using System.Drawing;

Code

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
        string sql = "SELECT ShipCity, count(OrderID) AS Total FROM Orders WHERE ShipCountry = 'Brazil' GROUP BY ShipCity";
        using (SqlConnection con = new SqlConnection(constr))
        {
            using (SqlDataAdapter sda = new SqlDataAdapter(sql, con))
            {
                sda.Fill(dt);
            }
        }
        string[] x = new string[dt.Rows.Count];
        int[] y = new int[dt.Rows.Count];
        int index = 0;
        foreach (DataRow row in dt.Rows)
        {
            x[index] = row["ShipCity"].ToString();
            y[index] = Convert.ToInt32(row["Total"]);
            index++;
        }
        Chart1.Series[0].Points.DataBindXY(x, y);
        Chart1.Series[0].ChartType = SeriesChartType.Line;

        Chart1.ChartAreas["ChartArea1"].Area3DStyle.Inclination = 0;
        Chart1.ChartAreas["ChartArea1"].Area3DStyle.Enable3D = false;
        Chart1.ChartAreas["ChartArea1"].AxisX.LabelStyle.Angle = 0;
        Chart1.ChartAreas["ChartArea1"].AxisX.IsLabelAutoFit = false;
        Chart1.ChartAreas["ChartArea1"].AxisX.LabelStyle.Font = new Font("Arial", 9);
        Chart1.ChartAreas["ChartArea1"].AxisX.LabelStyle.IsStaggered = false;
        Chart1.ChartAreas["ChartArea1"].AxisX.LabelStyle.Enabled = true;
        Chart1.ChartAreas["ChartArea1"].AxisY.LabelStyle.Format = "##,#";
        Chart1.ChartAreas["ChartArea1"].AxisX.IsMarginVisible = true;
        Chart1.ChartAreas["ChartArea1"].AxisY.LineColor = Color.FromArgb(0, 0, 205);
        Chart1.ChartAreas["ChartArea1"].AxisX.LineColor = Color.FromArgb(0, 0, 205);
        Chart1.ChartAreas["ChartArea1"].AxisX.LineDashStyle = ChartDashStyle.Solid;
        Chart1.ChartAreas["ChartArea1"].AxisX.LineWidth = 2;
        Chart1.ChartAreas["ChartArea1"].AxisY.LineWidth = 2;

        Chart1.ChartAreas["ChartArea1"].AxisY.Minimum = 0;
        Chart1.ChartAreas["ChartArea1"].AxisY.Maximum = 500;

        Axis ay = Chart1.ChartAreas["ChartArea1"].AxisY;
        ay.MajorGrid.Interval = 50;

        Chart1.ChartAreas["ChartArea1"].AxisX.Title = "Days";
        Chart1.ChartAreas["ChartArea1"].AxisY.Title = "Numbers";

        Chart1.ChartAreas["ChartArea1"].AxisX.TitleFont = new Font("Microsoft Sans Serif", 14);
        Chart1.ChartAreas["ChartArea1"].AxisY.TitleFont = new Font("Microsoft Sans Serif", 14);

        Chart1.ChartAreas["ChartArea1"].AxisX.MajorGrid.Enabled = false;
        Chart1.ChartAreas["ChartArea1"].AxisY.MajorGrid.Enabled = true;

        Chart1.ChartAreas["ChartArea1"].BorderDashStyle = ChartDashStyle.Solid;
        Chart1.ChartAreas["ChartArea1"].BorderWidth = 1;
        Chart1.BorderSkin.SkinStyle = BorderSkinStyle.Emboss;
        Chart1.BorderlineColor = Color.FromArgb(26, 59, 105);
        Chart1.BorderlineWidth = 2;
        Chart1.BackColor = Color.AliceBlue;
        Chart1.AntiAliasing = AntiAliasingStyles.All;
        Chart1.TextAntiAliasingQuality = TextAntiAliasingQuality.High;
    }
}

Screenshot