Question

How to take column backup for a table in mysql.we have any command for it.Please provide the solution for it

Answer 1

You can use MySqlBackup.NET to help to do that:
http://mysqlbackupnet.codeplex.com

string file = "C:\\backup.sql";
string conn = "server=localhost;user=root;pwd=qwerty;database=test;";
var mb = new MySqlBackup(conn);
mb.ExportInfo.FileName = file;
mb.ExportRows = false;
mb.ExportTableStructure = true;
mb.Export();