ES-975464 - Resolve the ReadMe file length issue in this sample repository

Author: SreemonPremkumarM

README.md

@@ -1,2 +1,19 @@
-# fit-the-columns-and-rows-size-based-on-custom-control-size
+# Fit the columns and rows size based on custom control size
+
 This example demonstrates how to adjust the column and row height based on custom control size
+
+When [WPF GridControl](https://help.syncfusion.com/wpf/gridcontrol/overview) is placed inside custom control and if you want to auto fit the row/column size of `GridControl` based on custom control resized position, then you can invoke [SizeChanged](https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.control.sizechanged?view=netframework-4.8) event of `GridControl` and set the [RowHeights](https://help.syncfusion.com/cr/wpf/Syncfusion.Windows.Controls.Grid.GridModel.html#Syncfusion_Windows_Controls_Grid_GridModel_RowHeights) and [ColumnWidths](https://help.syncfusion.com/cr/wpf/Syncfusion.Windows.Controls.Grid.GridModel.html#Syncfusion_Windows_Controls_Grid_GridModel_ColumnWidths) property of [GridModel](https://help.syncfusion.com/cr/wpf/Syncfusion.Windows.Controls.Grid.GridModel.html) to the resized height/width.
+
+``` csharp
+grid.SizeChanged += grid_SizeChanged;
+//To autofit the cells based on custom control resizing,
+void grid_SizeChanged(object sender, SizeChangedEventArgs e)
+{
+     double width = (e.NewSize.Width - grid.Model.ColumnWidths.DefaultLineSize - 1) / (grid.Model.ColumnCount - 1);
+     double height = (e.NewSize.Height - grid.Model.RowHeights.DefaultLineSize - 1) / (grid.Model.RowCount - 1);
+     for (int i = 1; i < grid.Model.ColumnCount; ++i)
+        grid.Model.ColumnWidths[i] = width;
+     for (int j = 1; j < grid.Model.RowCount; ++j)
+        grid.Model.RowHeights[j] = height;
+}
+```