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You can protect sheets and lock cells in FlexSheet for WPF. IsProtected property is used to protect sheets in C1FlexSheet control. The following code illustrates the use of IsProtected property:
vbnet
protectedSheet.IsProtected = True
csharp
protectedSheet.IsProtected = true;
AddLockedCell method can be used to lock cells in C1FlexSheet control. The AddLockedCell method locks the specified cell range, as illustrated in the following code:
vbnet
protectedSheet.AddLockedCell(0, 0, 1, 1)
csharp
protectedSheet.AddLockedCell(0, 0, 1, 1);