so in toolspace view it will be located here
and inside expression there will be CSF expression that is just 1. I want to be able to write a function that will modify that 1 into any other number for example 0.9996851. and the same thing will occur for curve label style.
I will then see if I can also do the same for parcels but I am not sure if that is only for civil 3d
So, you want to an expression's value, depending on the need of the business/drawing content (in your case, it is custom scale factor with value being 1.0, and depending on the job location the drawing content presented, you want to be able to use code to set the expression "CSF"'s value to 0.999xxxx, am I right?).
Yes, you can do it by going to CivilDocument.Styles.LabelStyles.XXXXXXLabelStyles.Expressions. With the target ExpressionCollection available, you can then identify the target expression by its name (in your case, the name is "CSF"), then you update Expression.ExpressionString property (replacing "1", or "1.0" with "0.999xxxx")
Say, if you want to update the expression of GeneralLineLabelStyle, the pseudocode would be like:
foreach (var exp in CivilApplication.ActiveDocument.Styles.LabelStyles.GeneralLineLabelStyles.Expressions)
{
if (exp.Name == "CSF")
{
// parse the ExpressString property (a string value) to correctly replace the value in the string
}
}
