Type Casting to long

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Lalit Bhatia - 25 May 2005 12:12 GMT

When we retrieve data from a int field from a datatable and if I write
lValue = (long)dtTable.Rows[0]["Fld1"]
it generates an error at runtime. whereas it should be done because we are
converting int to long which should be possible.
but if I use Convert.ToInt64 it does give any error.

What is reason for that?

Regards,
Lalit Bhatia

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Patrice - 25 May 2005 12:46 GMT

What if you try :

lValue = (long)(int)dtTable.Rows[0]["Fld1"]

else post the error message and see if you can repro the problem for us with
simple code such as :
object o;

int intValue=10;

long longValue;

o=intValue;

//longValue=(long)o; fails

longValue=(long)(int)o; // works

MessageBox.Show(longValue.ToString());

longValue=Convert.ToInt64(o);

MessageBox.Show(longValue.ToString());

Patrice

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> When we retrieve data from a int field from a datatable and if I write
> lValue = (long)dtTable.Rows[0]["Fld1"]
[quoted text clipped - 6 lines]
> Regards,
> Lalit Bhatia

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