SfDataGrid displays all the text values in GridCells with a default Foreground color of RGB values 51. However SfDataGrid allows you to customize the Foreground color of the GridCells for the entire view and also to some specific cells based on conditions.
To change the Foreground color of the GridCells for the entire view, you can use the SfDataGrid.GridStyle property and set the custom style to change the foreground color. For more details please refer our user documentation in the below link.
In case, if your requirement is to change the Foreground color based on the cell value, then you can achieve this by creating custom GridCell derived from GridCell in SfDataGrid. SfDataGrid also provides options to load views inside the GridCell or to draw the cell value directly in the canvas based on your application requirements. Drawing the contents directly in the canvas gives you much better performance.
Refer the below code example for loading views inside the GridCell to customize its Foreground color based on cell value. The foreground of the GridCells are applied with red color for negative values and black for positive values.
Refer the below code example for directly drawing the cell values on the GridCell’s canvas. The foreground of the GridCells are applied with red color for values < 1010 and black for positive values while drawing in the canvas.
Refer the following screenshot for the final outcome
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