table' argument cannot be null. Parameter name: table

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Good Day ,

It has been a long day. here we go

tbldt = new DataTable("TIMETABLES");
       XmlDataDocument xmlDatadocTimeTable = new XmlDataDocument();
       xmlDatadocTimeTable.DataSet.ReadXml(@"C:\Pilot Project\App_Data\TimeTable_Full.xml");
       tbldt = (DataTable)xmlDatadocTimeTable.DataSet.Tables["TIMETABLES"];
       dsFinalTimeTable.Tables.Add(tbldt);

and the Error is:
table' argument cannot be null. Parameter name: table

and it points to the following line

dsFinalTimeTable.Tables.Add(tbldt);

Thanks

Posted 26-Jul-10 4:37am

Vimalsoft(Pty) Ltd

Updated 26-Jul-10 4:57am

Sandeep Mewara

v2

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2 solutions

Solution 1

The new instance of the datatable set into "tbldt" is being reset by the line:

tbldt = (DataTable)xmlDatadocTimeTable.DataSet.Tables["TIMETABLES"];

I would check to make sure your file "TimeTable_Full.xml" indeed has the TIMETABLES table. Because it seems, it does not.

Posted 26-Jul-10 4:57am

Andrew Rissing

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William Winner · Accepted Answer · 2010-07-26T08:34:00

I agree with Andrew.

As a side note, you're wasting memory by declaring tbldt equal to a new DataTable.

You then change where tbldt is pointing to without disposing of the other table which AFAIK will keep the new DataTable in memory and you'll not be able to use that block.

Since you're setting tbldt to a DataTable, you don't need to create it as a new object. You also don't need to tell it that it is a DataTable. DataSet.Tables[stringValue] returns a DataTable; This is the way to do it:

C#

DataTable tbldt;
tbldt = xmlDatadocTimeTable.DataSet.Tables["TIMETABLES"];