frmexcelchart.cs

< SQL Server2005程序设计>

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace Chapter19
{
    public partial class frmExcelChart : Form
    {
        bool ChangeDataMember = true;

        public frmExcelChart()
        {
            InitializeComponent();
        }

        private void btnConnect_Click(object sender, EventArgs e)
        {
            MSDASC.DataLinks objDataSourceDlg = new MSDASC.DataLinks();
            ADODB.Connection adoConnection = new ADODB.Connection();
            object objTempConn = null;

            adoConnection.ConnectionString = "Provider=MSOLAP;Integrated Security=SSPI";
            objTempConn = (object)adoConnection;
            if (objDataSourceDlg.PromptEdit(ref objTempConn))
            {
                echMain.ConnectionString = adoConnection.ConnectionString;
                
                LoadCubes();
            }
        }

        private void LoadCubes()
        {
            cboCubes.Items.Clear();
            object[] objArr = (object[])(((Microsoft.Office.Interop.Owc11.PivotTableClass)(echMain.InternalPivotTable)).DataMemberStrings);
            for (int i = 0; i < objArr.Length; i += 1)
                cboCubes.Items.Add((string)objArr[i]);
            cboCubes.SelectedIndex = 0;
        }

        private void cboCubes_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (ChangeDataMember)
            {
                echMain.DataMember = cboCubes.SelectedItem.ToString();
                echMain.DisplayFieldList = true;
            }

        }

        private void Chart_Load(object sender, EventArgs e)
        {
            ChangeDataMember = false;
            LoadCubes();
            ChangeDataMember = true;
        }
    }
}