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ASP.NET 1.x and 2.0 Application Design Application design with ASP.NET 1.0, 1.1, and 2.0.
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Old January 25th, 2005, 02:07 AM
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Default QueryInterface for interface failed problem

Hello to All
I am the new one, i need help

basically i am using ChartFX.dll and i have created a class with chart setting function and calling it from load event of page it displaying following error:

QueryInterface for interface ChartfxLib.IChartFX failed.
My code is:

public class CChartView
{
protected ChartFX m_Chart;
public CChartView()
{
//
// TODO: Add constructor logic here
//
}
public void ChartSettings()
{
m_Chart = new ChartFX();

//Back Color
Color clr = Color.FromArgb(0,0,234);
m_Chart.RGBBk = (uint)clr.ToArgb();

//Chart Title
m_Chart.set_Title(ChartfxLib.CfxTitle.CHART_TOPTIT ,"GeoMos NetViwer

Chart Demo" );

//Axis Range setting AXIS_Y

m_Chart.Axis[CfxAxisIndex.AXIS_Y].Min =0;
m_Chart.Axis[CfxAxisIndex.AXIS_Y].Max =50;
m_Chart.Axis[CfxAxisIndex.AXIS_Y].STEP =10;

m_Chart.Axis[CfxAxisIndex.AXIS_Y].ResetScale();

//AXIS_X
m_Chart.Axis[CfxAxisIndex.AXIS_X].set_Label(0,"A");
m_Chart.Axis[CfxAxisIndex.AXIS_X].set_Label(1,"B");
m_Chart.Axis[CfxAxisIndex.AXIS_X].set_Label(2,"C");
m_Chart.Axis[CfxAxisIndex.AXIS_X].set_Label(3,"D");
m_Chart.Axis[CfxAxisIndex.AXIS_X].set_Label(4,"E");
m_Chart.Axis[CfxAxisIndex.AXIS_X].set_Label(5,"F");

m_Chart.UpdateSizeNow();

}

//Calling from
public class WebForm1 : System.Web.UI.Page
    {
        protected ChartDemo.ChartView m_Chart;
        private void Page_Load(object sender, System.EventArgs e)
        {
            // Put user code to initialize the page here
            m_Chart = new ChartDemo.ChartView();
            m_Chart.ChartSettings();
        }
}
Please anyone help to resolve this error:
"QueryInterface for interface ChartfxLib.IChartFX failed."
Birendra :(
(Delhi - India)


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Old December 16th, 2005, 02:49 PM
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Default

Not sure if this will help, but we were having the same problem. Turned out to be a corrupt dll. It was an internal com component, so we rebuilt it and redeployed.

This was based on searching on the same problem and the answers were all either reinstall the application or check security.

 


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