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The Type or namespace "RectangleF' could not be found (are you missing a using directive or assembly reference) #34
Description
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RectangleF: Error CS0246 The type or namespace name 'RectangleF' could not be found (are you missing a using directive or an assembly reference?)
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Quick Actions adds: "using System.Drawing" but this creates a conflict with Maui.Graphics and is the incorrect Rect type for
the following line of code "canvas.FillRectangle(rect)" and other Maui.Graphics references (e.g., Color, convas, etc.). -
To test I added "using SDraw = System.Drawing" yielding SDraw.RectangleF rect = new( ... but as noted above RectangleF is wrong type for "canvas.FillRectangle(rect)".
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Added following and worked correctly:
Rect newRect = new(
x: columnIndex * cellWidthPx + xPad,
y: rowIndex * cellHeightPx + yPad,
width: cellWidthPx - xPad * 2,
height: cellHeightPx - yPad * 2);
canvas.FillRectangle(newRect);
- Fix is to use Maui.Graphics.Rect (rather than System.Drawing.RectangleF) .
Activity
robreno commentedon May 2, 2023
I am so grateful for all the work you have done and the code you have shared. It will help greatly in a Maui project I am working on at this time where I am developing audiobooks with .NET Maui. I need to analyze an audio (MP3 or WAV) input file and use AI and Machine Learning to identify the point between paragraphs in the accompanying text so I can create a tap-n-play paragraph only feature. I have already found the bracketed start and end of each paragraph but to fine tune the actual middle-point (lowest frequency point) between paragraphs I want to use AI to auto-locate the lowest frequency point to make processing large audio files easier.