C# Invalid attempt to call Read when reader is closed C# Invalid attempt to call Read when reader is closed asp.net asp.net
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C# Invalid attempt to call Read when reader is closed
c#
asp.net
sql
3-tier
executereader
lien
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what is Microsoft.Practices.EnterpriseLibrary.Data
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sql
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three-tier
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asp.net
The type or namespace name 'CrystalReportViewer' does not exist in the namespace 'CrystalDecisions.Web' (are you missing an assembly reference?)
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crystal-reports
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report
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