I have a Sidewalks layer (polyline) and an Map Grid Index layer (polygon) that I need to get data into. I am trying to calculate the total LF of sidewalks in a particular Map Grid by centroid. So, as long as the centroid of the sidewalk is in a particular map grid it will calculate and add a field to the Polygon layer. I know how much sidewalk I have in the area and there's around 400 or so Grids I need to fill out. I don't want to do it manually for all 400 grids. Any help would be appreciated! Hopefully this makes sense! Thanks for the help!

I thought as much. The work around for the replacement of the Feature Vertices to Points tool works as follows:

1. Add two fields to hold the coordinates of the Mid point of the lines and calculate the Mid X and Mid Y values into them using the Geometry Calculator. Or with the Field Calculator (9.3 or later) do a Python calculation using !Shape.Centroid.X! and !Shape.Centroid.Y!

2. Open that table view of the lines and Export that to a new standalone table. The new table will have all of the original line attributes as well as these mid point coordinates.

3. Use the Make X/Y Event Layer tool to convert that table to a point layer. At 10.0 you can open the tool from the Source Tab of the TOC by right clicking the table name. Make the Mid X and Mid Y the coordinates and match the spatial reference to the original lines.

4. Optionally export the layer to a new permanent point feature class to improve performance, especially if there are a lot of lines and use that as the point layer for all of the other steps I mentioned. However, the X/Y event layer itself could be used in all of the other steps I mentioned as a point layer if you wanted to skip this step.

Assuming this helped, give me a point on the right hand side of the post by clicking the up arrow above the 0.