c# sql executescalar returns null

If there are no dwn.220.v.uaeScalar will return null so you need to do some...

If there are no dwn.220.v.uaeScalar will return null so you need to do some checking. Additional: the sql in the question is bad in many ways.

⬇ Download Full Version

ExecuteScalar returns DBNull for null value from query and null for no resu...

ExecuteScalar returns DBNull for null value from query and null for no result. Maybe on your Use the ISNULL() function in your SQL. ISNULL.

⬇ Download Full Version

Hi all. I have a Stored Procedure in MSSQL. When I run it manualy, it retur...

Hi all. I have a Stored Procedure in MSSQL. When I run it manualy, it returns: Running [dbo].[UserLogin] (@CardNumber =

⬇ Download Full Version

My problem is that if the value from the database is null, the check for &q...

My problem is that if the value from the database is null, the check for "result in the sql, and then use 1/1/ as a flag for null, but I really don't like doing . a columns type is nullable but C# types do not support to have null.

⬇ Download Full Version

Return Value. Type: dwn.220.v.ua The first column of the first row in the r...

Return Value. Type: dwn.220.v.ua The first column of the first row in the result set, or a null reference (Nothing in Visual Basic) if the result set is empty. Returns.

⬇ Download Full Version

C# ExecuteScalar not returning null . Use GetInt32(0) instead to get the va...

C# ExecuteScalar not returning null . Use GetInt32(0) instead to get the value retuned by your SQL query. Permalink. Posted Jan 3.

⬇ Download Full Version

using (var comm = new SqlCommand("", conn)) { dwn.220.v.ua(); obj...

using (var comm = new SqlCommand("", conn)) { dwn.220.v.ua(); object noOfRecords = dwn.220.v.uaeScalar(); return noOfRecords!= null; } }.

⬇ Download Full Version

C# / C Sharp Forums on Bytes. What's the best way to check for null on...

C# / C Sharp Forums on Bytes. What's the best way to check for null on an ExecuteScalar? . returns one row, one column anyway (a single value) or else it returns null. pblm for null values · ExecuteScalar returns null · Null Returned from SQL Server Query · How Can an Integer Contain a Null Value?

⬇ Download Full Version

and it throws the the exception {dwn.220.v.uadCastException} because the fo...

and it throws the the exception {dwn.220.v.uadCastException} because the food table is empty and the max(food) is null how can i fix that.

⬇ Download Full Version

ExecuteScalar(); return type of the value you always have to check if the r...

ExecuteScalar(); return type of the value you always have to check if the return value is null or not.

⬇ Download Full Version

ExecuteScalar returns null (ex dwn.220.v.ua programmer): I am trying to swi...

ExecuteScalar returns null (ex dwn.220.v.ua programmer): I am trying to switch over from dwn.220.v.ua to C# so this is probably a elementary problem. Thank you! in SQL I get the desired result so it should return a result in my code.

⬇ Download Full Version

The ExecuteScalar() in C# SqlCommand Object is using for retrieve a single ...

The ExecuteScalar() in C# SqlCommand Object is using for retrieve a single value from Database If the Result Set is empty it will return a NULL reference.

⬇ Download Full Version

Now, my issue is when the SQL command returns a null (by design). I don...

Now, my issue is when the SQL command returns a null (by design). I don't know about C#, but in VB you can't test ExecuteScalar = null like that - you have.

⬇ Download Full Version

I resolved the error by closing sql server management studio that also had ...

I resolved the error by closing sql server management studio that also had a connection to the database. It's just SQLOLEDB against SQL that changes this.

⬇ Download Full Version

All the three functions i.e. ExecuteNonQuery, ExecuteScalar and ExecuteNonQ...

All the three functions i.e. ExecuteNonQuery, ExecuteScalar and ExecuteNonQuery will work flawlessly for SELECT SQL Query or Stored Return Identity (Auto increment) Column value after record insert in SQL Net with C# and VB. as NULL since there's nothing returned from the UPDATE query.

⬇ Download Full Version