Index was out of range. Must be non-negative and less than the size of the collection

Question

I got this error when I tried to get the entity. The error happened on the last statement.

ConfigFTPEntity ConfigFTPRow = new ConfigFTPEntity();
	EntityCollection<ConfigFTPEntity> ConfigFTPCollection = new EntityCollection<ConfigFTPEntity>(new ConfigFTPEntityFactory());
private CurrencyManager _ConfigFTPManager;


_ConfigFTPManager = (CurrencyManager)this.BindingContext[this.ultraComboX1.DataSource];
			ConfigFTPRow = (ConfigFTPEntity)ConfigFTPCollection[_ConfigFTPManager.Position];

Answer 1

try this statement and check if element get from position index will be correct

ConfigFTPRow = (ConfigFTPEntity)ConfigFTPCollection[_ConfigFTPManager.Position - 1];

Answer 2

See if it works

ConfigFTPEntity ConfigFTPRow = new ConfigFTPEntity();
	EntityCollection<ConfigFTPEntity> ConfigFTPCollection = new EntityCollection<ConfigFTPEntity>(new ConfigFTPEntityFactory());
private CurrencyManager _ConfigFTPManager;


_ConfigFTPManager = (CurrencyManager)this.BindingContext[this.ultraComboX1.DataSource];
			ConfigFTPRow = (ConfigFTPEntity)ConfigFTPCollection[_ConfigFTPManager.Position -1];

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Web Developer

Answer 3

just tried, it is the same.  The ConfigFTPCollection is empty, that is the problem I think

Answer 4

are you sure that 'this.ultraComboX1.DataSource' has been bound before?

Answer 5

I believe it is good

Answer 6

In my opinion there's something wrong during binding the datasource...

mmm try this

(CurrencyManager)this.BindingContext[this.ultraComboX1.DataSource].Current;

or check the example in documentation page.

http://msdn.microsoft.com/en-us/library/system.windows.forms.currencymanager.aspx