Com Exception is unhandeled while executing ExecuteReader

hi

i get following exception when i execute my code

"COM object that has been separated from its underlying RCW cannot be used."

code is as follow:

privatestring conString;

OleDbDataReader dr;

OleDbDataAdapter da;

OleDbConnection con =newOleDbConnection();

OleDbCommand com =newOleDbCommand();

OleDbParameter id =newOleDbParameter();

OleDbParameter name =newOleDbParameter();

publicbool IsCompanyExist(string namee)

{

bool exist =false;

strOleDb ="Select strCompanyName from tblCompanyMain where strCompanyName = @strCompanyName";

this.com.CommandText = strOleDb;

this.con.ConnectionString =this.conString;

this.com.Connection = con;

this.name.ParameterName ="@strCompanyName";

this.name.Value = namee;

com.Parameters.Add(name);

try

if (dr.Read())

{

exist =true;

}

else

exist =false;

}

con.Close();

dr.Close();

com.Parameters.Clear();

}

catch (OleDbException ex)

{

string s = ex.Message ;

}

return exist;

}

publicint GetCompanyID(string namee)

{

int id = 0;

strOleDb ="Select intID from tblCompanyMain where strCompanyName = @strCompanyName";

com.CommandText = strOleDb;

con.ConnectionString = conString;

com.Connection = con;

this.name.ParameterName ="@strCompanyName";

this.name.Value = namee;

com.Parameters.Add(this.name);

try

if (dr.Read())

{

id = dr.GetInt32(0);

}

}

catch (OleDbException ex)

{

string s = ex.Message;

}

con.Close();

dr.Close();

com.Parameters.Clear();

return id;

}

First time when this code executes it works fine...but second time when i hit the button to search the company it gives the exception....kindly can any one help mee

[5234 byte] By [MuhammdJassimMunir] at [2007-12-25]