The operation '&' is not supported for the data types 'String' and 'System.Collection.Hashtable'

When attempting to send a hashtable to my user-defined function ajaxSCall(), which requires a hashtable in the last argument at '" & mData & "', an error is displayed stating "Operator '&' is not defined for types 'String' and 'System.Collection.Hashtable'. "
Any assistance on how to resolve this issue would be greatly appreciated. 

Public Shared Function diplayNoti(ByVal BtnLabel As String ,ByVal btnUrl As String, ByVal mData As Hashtable)

    scriptHtm= "<script>function(){ ajaxSCall('NL', 'mainDiv', '" & btnUrl & "','" & mData & "' )};</script>"

    Return scriptHtm
javascriptasp.netvb.nethashtable

Answer №1

Make sure to convert the key of your collection to a string since your hashtable consists of key/value pairs.

Hashtable Class

This class represents a group of key/value pairs that are arranged according to the hash code of the key.

scriptHtm= "<script>function(){{ ajaxSCall('NL', 'mainDiv', '" & btnUrl & "','" & CStr(mData("specifickey")) & "' )};</script>"

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