a simple database query

Just looking for a simple example of how to query a database and determine if a value is in it. I want to return true if it is there and false if it is not.... I mucked around with one example here is what I have so far.... any ideas??



/*Check to see if the company is in the database*/
private bool CheckCompany(string CompanyName){
string strConnection = "server=localhost; uid=sa; pwd=; database=Company";

string strCommand = "SELECT * from CompanyNames WHERE name = 'CompanyName' ";
SqlDataAdapter dataAdapter = new SqlDataAdapter(strCommand,strConnection);

DataSet dataSet = new DataSet();
dataAdapter.Fill(dataSet,"Companies");
SqlCommandBuilder bldr = new SqlCommandBuilder(dataAdapter);
DataTable dataTable = dataSet.Tables[0];

}

After that, check for the no. of rows in your datatable. If more than 0, your value exists

if (dataTable.Rows.Count > 0)
{
return true;
}

perfect! thanks!!