Hi, I am using RadControls for WinForms SP2 (Q2 2010) and trying to render a stock price line chart, of which each price is a daily price. The prices are rendering ok however I have an issue with the x axis which I believe is affecting how the data is ultimately rendered.

Each item in the series is a daily price for the given stock, along with the date on which the price relates to.  On the X axis we want to just show monthly points, so for our example where we are rendering a chart of daily stock prices, each axis label on the x axis would show the month (Jan, Feb, Mar etc). The code we are using (VB.net) to set the x axis label is:

chrtVBA.PlotArea.XAxis.AddRange(xMin, xMax, 30)

…where xMin and xMax are the minimum and maximum dates in the series (converted using .ToOADate()).

As you can see, we are specifying 30 as the step value, however I beleive that because there aren’t 30 days in every month the X axis labels becomes out of sync with the plotted points. Is there a specific method to call or property we can set so that the x axis correctly shows the correct month?

if (row.Cells[e.ColumnIndex].CellElement != null)  CellElement is null and is that last row in view when the grid loads.  So my code below only works for rows in view.

Let me state exactly what I'm trying to do. If nothing  else please help me find the correct solution.
I have a Winforms RadGridView table with GridViewCheckBoxes in a column.  When a user selects a checkbox in a row i want all the rest of the checkboxes in the other rows to be disabled.  When the user unchecks the checkboxed row I want all checkboxes in other rows to be enabled.  It's simple, only one checkbox in a row can be selected.

public bool HandleCellValueChanged(RadGridView matrixRadGrid, GridViewCellEventArgs e, MatrixPickerPresenter matrixPresenter, RadGridView measureGrid)

{
 

bool IsValidSelection = false;

if (reportType == CustomReportTypes.Matrix || reportType == CustomReportTypes.MatrixRowWithHistory || reportType == CustomReportTypes.MatrixWithHistory)

{

if (e.Column.HeaderText == "Selected")

{

measureGrid.DataSource =

null;

if (matrixPresenter.Measures.Count > 0)

{

measureGrid.Enabled =

true;

measureGrid.DataSource = matrixPresenter.Measures;

try

var displayRow =

measureGrid.Rows.Where(row => ((

ReportMeasure)row.DataBoundItem).IsDisplayMeasure).FirstOrDefault();

if (displayRow != null)

{

// The Display Measure must be in view for the RowFormatting event to fire and the user needs to know what the Display Measure is at the start.

catch

{

// Do nothing: No need to end the world just because the Display Measure isn't in view.

else

false;

}

IsValidSelection = measureGrid.Enabled;

var selectedReportItem = e.Row.DataBoundItem as ReportMatrix;

if (selectedReportItem != null)

{

bool enableOtherSelectedCheckboxes = true;

if (selectedReportItem.Selected)

{

enableOtherSelectedCheckboxes =

false;

IsValidSelection =

true;

}

for (int index = 0; index < matrixRadGrid.Rows.Count; index++)

{

var row = matrixRadGrid.Rows[index];

if (e.RowIndex == index)

{

if (!selectedReportItem.Selected)

{

selectedReportItem.MatrixParameter = (

int)MatrixParameterTypes.None;

e.Row.Cells[e.ColumnIndex + 1].Value = (

int)MatrixParameterTypes.None;

}

continue;

}

matrixRadGrid.GridElement.ScrollToRow(row);

if (row.Cells[e.ColumnIndex].CellElement != null)

{

row.Cells[e.ColumnIndex].CellElement.Enabled = enableOtherSelectedCheckboxes;

}

}

}

}

else if (e.Column.HeaderText == "Runtime Parameter")

{

bool setEnabled = true;

var reportMatrix = e.Row.DataBoundItem as ReportMatrix;

if (reportMatrix != null && reportMatrix.Selected)

{

setEnabled =

false;

IsValidSelection =

true;

measureGrid.Enabled =

true;

}

for (int index = 0; index < matrixRadGrid.Rows.Count; index++)

{

var row = matrixRadGrid.Rows[index];

if (e.RowIndex == index)

{

continue;

}

row.Cells[e.ColumnIndex].CellElement.Enabled = setEnabled;

}

}

}

return IsValidSelection;

}

}