getschematable

问题 I am a newbie and I am trying to retrieve the Column NAme , Size ( max legth ) and DataType from some table in my database , the following code when i execute it expecting it to display all the column types and names ( i didn't find how to refer to the Size , i used ColumnSize but it is said that DataColumn does not contain a definition for this method ) but when executing it , it only displays : IsColumnSetSystem.Boolean this is the code : private void button1_Click(object sender, EventArgs

问题 i am trying to get the data type of each column given to do some verification i already tried the getSchemaTable but it only gives me the schema of a table without values. For example , i have a table in my database and a columnname : id_declarant . I want to retrieve the datatype and Size of a value from id_declarant . Here is The code : comm.Connection=new SqlConnection(connectionString); String sql = @" SELECT * FROM id_declarant,declarant WHERE (declarant.Nom_pren_RS='" + textBox1.Text +