how to know explicitly the data type of a field in a database

shyam_oec's Avatar, Join Date: Nov 2007
Contributor
hi all,
i am creating a method that accepts a String parameter ,a SqlConnection type paremeter and a String parameter for storing the name of table,like this

public int validation(String str,SqlConnection sqlcon,String table_name)
{
...
...
}

This method is created in a ClassLibrary file,that i will use it in my main project.From main project this validation() method will be called to check whether the string 'str' passed is of specified type as in the database table's particular field.
So,how to get the datatype of a field of a particular table in a particular database?
0
urstop's Avatar, Join Date: Oct 2007
Contributor
Which field in the table you would like to compare it against, as a table can have more than one columns?
0
shyam_oec's Avatar, Join Date: Nov 2007
Contributor
hi,
In my own defined method ,i will pass the connection string of the database and table name in the parameter.
And my method should return the number of columns and datatype of each column in the table.
That how to do?
0
venami's Avatar, Join Date: Dec 2008
Ambitious contributor
You can get the details from the metadata tables of your DBMS. What is the DBMS that you use?
0
urstop's Avatar, Join Date: Oct 2007
Contributor
You can execute the stored procedure sp_help with the tablename to get a resultset with the column names, data type and other extra info. You can use this resultset to extract the necessary colulmn name and data type information.