The Syncfusion native Blazor components library offers 70+ UI and Data Viz web controls that are responsive and lightweight for building modern web apps.
.NET PDF framework is a high-performance and comprehensive library used to create, read, merge, split, secure, edit, view, and review PDF files in C#/VB.NET.
System.NullReferenceException: Object reference not set to an instance of an object. at Syncfusion.Windows.Forms.Grid.Grouping.GridTableDescriptor.EnsureSummaryDescriptors() at Syncfusion.Grouping.Table.CategorizeElements() at Syncfusion.Grouping.Table.OnEnsureInitialized(Object sender) at Syncfusion.Grouping.Element.EnsureInitialized(Object sender, Boolean notifyParent) at Syncfusion.Grouping.Table.EnsureInitialized(Object sender, Boolean notifyParent) at Syncfusion.Grouping.Table.get_TopLevelGroup() at Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.InternalGetFrozenRows() at Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.FixTopLeftRowCol() at Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.OnBeforePaint(EventArgs e) at Syncfusion.Windows.Forms.Grid.GridControlBase.WndProc(Message& msg) at Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.WndProc(Message& msg) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)