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System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
at System.Collections.Generic.Dictionary`2.KeyCollection.Enumerator.MoveNext()
at System.Web.UI.WebControls.Repeater.CreateControlHierarchy(Boolean useDataSource)
at System.Web.UI.WebControls.Repeater.OnDataBinding(EventArgs e)
at System.Web.UI.WebControls.Repeater.DataBind()
at Michigan.WasteDataSystem.Web.Controls.ExpandableListControl.DataBind() in C:\Projects\WDS\Build\src\View-Web\Controls\ExpandableListControl.ascx.cs:line 449
at Michigan.WasteDataSystem.Web.SolidWaste.FinancialAssurance.OnInit(EventArgs e) in C:\Projects\WDS\Build\src\View-Web\SolidWaste\FinancialAssurance.aspx.cs:line 174
at System.Web.UI.Control.InitRecursive(Control namingContainer)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)