Code snippet:-

private void SetChartTypeAndAxisLabels()
{
 mChart.ChartType = ChartType.ScatterChart;   
 mChart.ScatterChart.ConnectWithLines = true;
 mChart.ScatterChart.LineAppearance.Thickness = 1;
 mChart.ScatterChart.Icon = SymbolIcon.None;   
 System.Collections.Hashtable axisLabelHashTable = new System.Collections.Hashtable();
 axisLabelHashTable.Add("YDATA_VALUE", new YAxisLabelRenderer());
 axisLabelHashTable.Add("XDATA_VALUE", new XAxisLabelRenderer());
 mChart.LabelHash = axisLabelHashTable;

 mChart.Axis.Y.Labels.ItemFormatString = "<YDATA_VALUE>";
 mChart.Axis.X.Labels.ItemFormatString = "<XDATA_VALUE>";
 mChart.Axis.X.RangeType = Infragistics.UltraChart.Shared.Styles.AxisRangeType.Custom;
 mChart.Axis.Y.RangeType = Infragistics.UltraChart.Shared.Styles.AxisRangeType.Custom;
 mChart.Legend.Visible = false;
}

private void SetXAxisTypeAndRange(NumericAxisType axisType, double rangeMin, double rangeMax)
{
 if (axisType == NumericAxisType.Logarithmic)
    {
  Chart.Axis.X.MinorGridLines.Visible = true;
  Chart.Axis.X.NumericAxisType = NumericAxisType.Logarithmic;
  Chart.Axis.X.TickmarkStyle = AxisTickStyle.DataInterval;
  Chart.Axis.Y.TickmarkIntervalType = AxisIntervalType.NotSet;
  Chart.Axis.Y.MajorGridLines.DrawStyle = LineDrawStyle.Solid;
  Chart.Axis.Y.MinorGridLines.DrawStyle = LineDrawStyle.Dash;
  Chart.Axis.X.TickmarkInterval = 1;
  Chart.Axis.X.RangeMin = rangeMin;
  Chart.Axis.X.RangeMax = rangeMax;
  Chart.Axis.X.MinorGridLines.Visible = true;
  Chart.Axis.X.RangeType = AxisRangeType.Custom;

    }
 else
     {
  Chart.Axis.X.NumericAxisType = NumericAxisType.Linear;
  Chart.Axis.X.RangeMin = mXAxisDetails.RangeMin;
  Chart.Axis.X.RangeMax = mXAxisDetails.RangeMax;
  Chart.Axis.X.TickmarkStyle = AxisTickStyle.DataInterval;
  Chart.Axis.X.TickmarkInterval = (Chart.Axis.X.RangeMax - Chart.Axis.X.RangeMin) / NUMBEROFAXISLABELS;
  Chart.Axis.X.MinorGridLines.Visible = false;
     }
 Chart.Axis.X.LogBase = 10;
}

public void RenderGraph()
{
    SetChartTypeAndAxislabels();
    // xMin and xMax are the user inputs for example i have given the hard coded values.
    SetXAxisTypeAndRange(NumericAxisType.Logarithmic,0.001,1000);
}
hope the code snippet will help u to find the exact problem

Hello Mdsat,

Did my sample project answer your question?

Hello,

I wasn't able to get a sample working the way you wanted with the code you provided, but I was able to by doing everything in the designer.  Take a look at the sample project I've attached and if it answers your question, verify this post as the answer.