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Reading SQL server Numeric data type into a C# variable

Posted on 2006-07-01
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Last Modified: 2011-10-03
Hello,

I have:
- a Microsoft SQLServer database.
- a table named _Tab containing:
- 1 column, named Value, assigned a Numeric data type
- 1 row of data, 9998887777

I'd like to:
My main goal is to read that Numeric data into an integer or something that will NOT spit out a scientific notation.
I want to read it into an Int or something so that if i print that value to a screen after its read into a variable, it will
still be 9998887777.   Not 1+0E878748 or whatever.

I know how to set up the sqldatareader and how to loop through to read the data, what i do not know is how to cast the value properly so it comes in without errors or changes.

Thanks so much for the help.
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Question by:RichardRiga
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LVL 5

Accepted Solution

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aaronfeng earned 2000 total points
ID: 17025340
Try to use Int64 because the value 9998887777 is too big for Int32.

using (SqlConnection con = new SqlConnection("...")) {
      SqlCommand command = con.CreateCommand();
        SqlDataAdapter adaptor = new SqlDataAdapter(command);

      Int64 value = 0;
      command.CommandText = "SELECT * FROM Table_2";
      try {
            con.Open();
            value = Int64.Parse(command.ExecuteScalar().ToString());
      }
      finally {
            con.Close();
      }
}

The code above worked just fine with Int64.

Cheers,

Aaron
http://geekswithblogs.net/afeng/
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LVL 5

Expert Comment

by:aaronfeng
ID: 17025355
Just for your information:

79,228,162,514,264,337,593,543,950,335 - Decimal Max
9,223,372,036,854,775,807 - Int64 Max
2,147,483,647 - Int32 Max

If the value comes from the database can be bigger than Int64, you can use decimal.

Cheers,

Aaron
http://geekswithblogs.net/afeng/
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LVL 1

Author Comment

by:RichardRiga
ID: 17026517
Thanks a ton, Aaron!
For the sample and the later comment.  Helped a lot.
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