If Statment

Question

hello

 i want to run this code,where all fields is not null  then Query will be Executed,if not then message will be displayed

 

private bool IsValidationSuccess()
{
try
{
if          (string.IsNullOrEmpty(txtCompanyName.Text.Trim())

            && string.IsNullOrEmpty(txtCompanyAddress1.Text)  &&string.IsNullOrEmpty(txtPincode.Text.Trim())
           && cmbDistrict.SelectedIndex <=0 && cmbTaluka.SelectedIndex <=0)
{
return false;
}

else
{
return true ;

}
}
catch (SqlException ex)
{
throw ex;
}

 //on button click

if (IsValidationSuccess())
{
AddCompanyDetails();

}
else
{
MessageBox.Show("Please fill Compulsary(*) field");
}
 ///////////////////////////////

 error:when all field contain data it returns false,and message box is displayed .