how can we create pie chart with tooltips plz tell me

Hello...

Charting in Asp.net is easy with MSChart.exe by microsoft.

You can find various charts in this MSChart.exe

Click Here to download the MSChart.exe

It's easy to use.

For Pie chart

Chart1.ChartAreas.Add("PieChartArea");
        Chart1.ChartAreas["PieChartArea"].Area3DStyle.Enable3D = true;

        Chart1.Series.Add("VotesSeries");
        Chart1.Series["VotesSeries"].ChartType = SeriesChartType.Pie;
        Chart1.Series["VotesSeries"]["PieLabelInside"] = "Inside";
        string[] xValue = new string[dt.Rows.Count];
        Int32[] yValue = new Int32[dt.Rows.Count];
        for (int i = 0; i < dt.Rows.Count; i++)
        {
            //Chart1.Series["VotesSeries"].Points.DataBindXY(dt.Rows[i][0].ToString(),dt.Rows[i][1].ToString());
            xValue[i] = dt.Rows[i][0].ToString();
            yValue[i] = Convert.ToInt32(dt.Rows[i][1].ToString());
        }
        Chart1.Series["VotesSeries"].Points.DataBindXY(xValue, yValue);
        Chart1.Series["VotesSeries"].IsVisibleInLegend = true;

Thanks