How to delete VB code from an Excel sheet using C#?

Question

Does anyone know how to delete all VB code form an Excel workbook using C#? This code doesn't work. It removes first (last one) VBComponent, but rises ArgumentException on second one.

VBProject project = workbook.VBProject;
int componentsCount = project.VBComponents.Count;

for (int i = componentsCount; i >= 1; i--)
{
    VBComponent component = project.VBComponents.Item(i);
    project.VBComponents.Remove(component);
} 

Any suggestions?

Answer 1

I solved it with Sam's help. I suspect that each Excel workbook has some non-deletable VBComponents, hence instead of deleting them we can clear their content. It works now. Thank you Sam.

VBProject project = workbook.VBProject;

for (int i = project.VBComponents.Count; i >= 1; i--)
{
    VBComponent component = project.VBComponents.Item(i);
    try
    {
        project.VBComponents.Remove(component);
    }
    catch(ArgumentException)
    {
        continue;
    }
}

for (int i = project.VBComponents.Count; i >= 1; i--)
{
    VBComponent component = project.VBComponents.Item(i);
        component.CodeModule.DeleteLines(1, component.CodeModule.CountOfLines);
}

Do not forget to save your workbook afterwards

Answer 2

have you tried deleting the first one n times:

VBProject project = workbook.VBProject;
int componentsCount = project.VBComponents.Count;

for (int i = 1; i <= componentsCount; i++)
{
    VBComponent component = project.VBComponents.Item(1);
    project.VBComponents.Remove(component);
}

You might need to tweak this, but i think the VBA collections are 1 based (might need to make the project.VBComponents.Item(0) instead.

EDIT:

I found this post which explains how to do it in VBA, but presumably its not too difficult to translate...