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            dataSet2.Relations.Add("ParameterProperties", dataSet2.Tables["Parameters"].Columns["ParameterName"], dataSet2.Tables["ParameterValues"].Columns["ParameterName"]);
            
            P1_Name.DisplayMember = "Parameters.ParameterName"; 
            P1_Name.ValueMember = "Parameters.ParameterName";
            P1_Name.DataSource = this.dataSet2;
            P1_Value.DisplayMember = "Parameters.ParameterProperties.ValueDefinition";
            P1_Value.ValueMember = "Parameters.ParameterProperties.ParameterName";
            P1_Value.DataSource = this.dataSet2;					

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            P2_Name.DisplayMember = "Parameters.ParameterName";
            P2_Name.ValueMember = "Parameters.ParameterName";
            P2_Name.DataSource = this.dataSet2;
            P2_Value.DisplayMember = "Parameters.ParameterProperties.ValueDefinition";
            P2_Value.ValueMember = "Parameters.ParameterProperties.ParameterName";
            P2_Value.DataSource = this.dataSet2;					

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BindingSource bs = new BindingSource();
bs.DataSource = dataset;

comboBox.DataSource = bs;