> works but = doesn't

[Laurel]

If I use the following clause in my code I get two errors on this line.

if (dsFacultyBio.Tables[strTable].Rows.Count = 0)

The errors are

C:\DEV QX C#\6.4.1\QX.Data\QXFaculty.cs(318): Cannot implicitly convert type
'int' to 'bool'
and

C:\DEV QX C#\6.4.1\QX.Data\QXFaculty.cs(318): Property or indexer
'System.Data.InternalDataCollectionBase.Count' cannot be assigned to -- it
is read only
BUT!!!! If I change the = sign to a sign, it works fine. This works
fine.

if (dsFacultyBio.Tables[strTable].Rows.Count 0)

What should I be doing to make this work with the equality?

tia

las

[Thomas T. Veldhouse]

Laurel <Fa******@hotmail.comwrote:

If I use the following clause in my code I get two errors on this line.

if (dsFacultyBio.Tables[strTable].Rows.Count = 0)

Should be:

if (dsFacultyBio.Tables[strTable].Rows.Count == 0)

Note the double equals.

HTH

--
Thomas T. Veldhouse
Key Fingerprint: 2DB9 813F F510 82C2 E1AE 34D0 D69D 1EDC D5EC AED1

[Mark Rae]

"Laurel" <Fa******@Hotmail.comwrote in message
news:uj***************@TK2MSFTNGP06.phx.gbl...

What should I be doing to make this work with the equality?

Use the correct operator, in this case == (double equals)

[Bruce Wood]

Laurel wrote:

If I use the following clause in my code I get two errors on this line.

if (dsFacultyBio.Tables[strTable].Rows.Count = 0)

The errors are

C:\DEV QX C#\6.4.1\QX.Data\QXFaculty.cs(318): Cannot implicitly convert type
'int' to 'bool'
and

C:\DEV QX C#\6.4.1\QX.Data\QXFaculty.cs(318): Property or indexer
'System.Data.InternalDataCollectionBase.Count' cannot be assigned to -- it
is read only
BUT!!!! If I change the = sign to a sign, it works fine. This works
fine.

if (dsFacultyBio.Tables[strTable].Rows.Count 0)

What should I be doing to make this work with the equality?

In all of the C-like languages (C, C++, Java, C#), a single = indicates
assignment. An equality comparison is ==.

That means that the compiler read what you wrote as: "Assign 0 to
dsFacultyBio.Tables[strTable].Rows.Count, then use the assignment
result (0) as a boolean condition in the "if" statement." Thus the two
messages.

[Laurel]

Thanks for the explanation. Somewhere along the line I thought == applied
to strings.

"Bruce Wood" <br*******@canada.comwrote in message
news:11**********************@i3g2000cwc.googlegro ups.com...

>
Laurel wrote:

>If I use the following clause in my code I get two errors on this line.

if (dsFacultyBio.Tables[strTable].Rows.Count = 0)

The errors are

C:\DEV QX C#\6.4.1\QX.Data\QXFaculty.cs(318): Cannot implicitly convert
type
'int' to 'bool'
and

C:\DEV QX C#\6.4.1\QX.Data\QXFaculty.cs(318): Property or indexer
'System.Data.InternalDataCollectionBase.Count' cannot be assigned to --
it
is read only
BUT!!!! If I change the = sign to a sign, it works fine. This works
fine.

if (dsFacultyBio.Tables[strTable].Rows.Count 0)

What should I be doing to make this work with the equality?

In all of the C-like languages (C, C++, Java, C#), a single = indicates
assignment. An equality comparison is ==.

That means that the compiler read what you wrote as: "Assign 0 to
dsFacultyBio.Tables[strTable].Rows.Count, then use the assignment
result (0) as a boolean condition in the "if" statement." Thus the two
messages.