FdoToolbox.Base.Controls.FdoJoinDialog.btnOk_Click C# (CSharp) Method

        private void btnOk_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.OK;

            if (this.Criteria != null)
            {
                this.Criteria.JoinPrefix = txtPrefix.Text;
                this.Criteria.JoinSchema = ((FeatureSchema)cmbSchema.SelectedItem).Name;
                this.Criteria.JoinClass = ((ClassDefinition)cmbClass.SelectedItem).Name;
                this.Criteria.JoinClassAlias = txtJoinClassAlias.Text;
                this.Criteria.JoinFilter = txtJoinFilter.Text;
                this.Criteria.JoinType = ((OSGeo.FDO.Expression.JoinType)cmbJoinType.SelectedItem);
            }
            else
            {
                this.Criteria = new FdoJoinCriteriaInfo()
                {
                    JoinPrefix = txtPrefix.Text,
                    JoinSchema = ((FeatureSchema)cmbSchema.SelectedItem).Name,
                    JoinClass = ((ClassDefinition)cmbClass.SelectedItem).Name,
                    JoinClassAlias = txtJoinClassAlias.Text,
                    JoinFilter = txtJoinFilter.Text,
                    JoinType = ((OSGeo.FDO.Expression.JoinType)cmbJoinType.SelectedItem)
                };
            }
        }