White area at the bottom of the chart - asp.net

Question

I use mschart in my website and I have a problem with that.
After I show the chart, a white area at the bottom of the chart will display.
That's not a part of my chart. What is that and how do I remove it?
Here is my MSChart Code.
<asp:Chart ID="Chart1" runat="server" Palette="SeaGreen" RightToLeft="No">
<Titles>
<asp:Title ShadowColor="32, 0, 0, 0" Font="Tahoma, 12pt," ShadowOffset="2" Text="Operation"
ForeColor="26, 59, 105">
</asp:Title>
</Titles>
<Series>
<asp:Series Name="Series1" XValueType="Auto" ChartType="Bar">
</asp:Series>
</Series>
<ChartAreas>
<asp:ChartArea Name="ChartArea1">
<AxisX2 TitleFont="Microsoft Sans Serif, 8pt">
</AxisX2>
<AxisY LineColor="64, 64, 64, 64" TitleFont="Tahoma, 12pt" Title="totalScore">
<MajorGrid LineColor="64, 64, 64, 64"></MajorGrid>
<LabelStyle Font="Tahoma, 12pt" />
<MajorGrid LineColor="64, 64, 64, 64" />
</AxisY>
<AxisX LineColor="64, 64, 64, 64" Interval="1" TitleFont="Tahoma, 12pt" IsLabelAutoFit="True"
Title="" LineWidth="1">
<MajorGrid LineColor="64, 64, 64, 64"></MajorGrid>
<LabelStyle Font="Tahoma, 12pt" />
<MajorGrid LineColor="64, 64, 64, 64" />
</AxisX>
<AxisY2 TitleFont="Microsoft Sans Serif, 12pt">
</AxisY2>
</asp:ChartArea>
</ChartAreas>
</asp:Chart>

Answer 1

finally i found my answer by myself.
in cs , i define an area that was unnecessary and because of that,MSChart draw an empty area chart, bottom of my true area chart.