[Solved] VB.Net Error: Unable to cast object of type System.DBNull to type System.Byte

Question

Please help i am getting the error below when i try to open pageLine 25         If eRowRowType  DataControlRowTypeDataRow ThenLine 26             Dim dr As DataRowView  CTypeeRowDataItem DataRowViewLine 27             Dim imageUrl As String  34dataimagejpgbase6434 amp ConvertToBase64StringCTypedr34sign34 ByteLine 28             CTypeeRowFindControl34Image134 ImageImageUrl  imageUrlLine 29         End IferrorUnable to cast object of type

dharmendr · Accepted Answer

Hi makumbiYou need to check the DataRowView Item value with IsDBNullIf its not Null then only set the ImageUrl by converting to ToBase64StringUse the modified codeIf eRowRowType  DataControlRowTypeDataRow Then    Dim dr As DataRowView  CTypeeRowDataItem DataRowView    If Not IsDBNulldr34sign34 Then        Dim imageUrl As String  34dataimagejpgbase6434 amp ConvertToBase64StringCTypedr34sign34 Byte        CTypeeRowFindControl34Image134 ImageImageUrl  imageUrl    End IfEnd If

[Solved] VB.Net Error: Unable to cast object of type System.DBNull to type System.Byte

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