HuaHeng/ICSSoft.AppSln/ICSSoft.Frame.APP/FormReadExcel.cs

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.OleDb;
using System.Windows.Forms;
using DevExpress.XtraEditors;
using ICSSoft.Base.Config.AppConfig;



namespace ICSSoft.Frame.APP
{
    public partial class FormReadExcel : XtraForm
    {
        public DataTable _excelData = null;
        public string _url = "";
        public FormReadExcel()
        {
            InitializeComponent();
        }

        private void txtUrl_ButtonClick(object sender, DevExpress.XtraEditors.Controls.ButtonPressedEventArgs e)
        {
            OpenFileDialog of = new OpenFileDialog {Filter = @"excel|*.xls;*.xlsx"};
            if (of.ShowDialog() == DialogResult.OK)
            {
                txtUrl.Text = of.FileName;
                txtSheet.Properties.Items.Clear();
                txtSheet.Text = "";
                string[] strs = GetExcelSheetNames(of.FileName);
                foreach (string str in strs)
                {
                    txtSheet.Properties.Items.Add(str);
                }
            }
        }

    
        private void btnOk_Click(object sender, EventArgs e)
        {
            if (txtUrl.Text.Trim() == "")
                return;
            if (txtSheet.Text.Trim() == "")
                return;
            _excelData = AppConfig.GetExcelData(txtUrl.Text, txtSheet.Text.Trim());
            _url = txtUrl.Text;
            DialogResult = DialogResult.OK;

        }


        private static string[] GetExcelSheetNames(string fileName)
        {
            OleDbConnection objConn = null;
            System.Data.DataTable dt = null;
            try
            {
                string connString;
                string fileType = fileName.Substring(fileName.LastIndexOf("."));
                if (fileType == ".xls")
                    connString = "Provider=Microsoft.Jet.OLEDB.4.0;" +
                       "Data Source=" + fileName + ";Extended Properties=Excel 8.0;";
                else//.xlsx   
                    connString = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + fileName + ";" + ";Extended Properties=\"Excel 12.0;HDR=YES;IMEX=1\"";
                // 创建连接对象    
                objConn = new OleDbConnection(connString);
                // 打开数据库连接    
                objConn.Open();
                // 得到包含数据架构的数据表    
                dt = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
                if (dt == null)
                {
                    return null;
                }
                List<string> excelSheets = new List<string>();

                // 添加工作表名称到字符串数组    
                foreach (DataRow row in dt.Rows)
                {
                    string strSheetTableName = row["TABLE_NAME"].ToString();
                    if (strSheetTableName.EndsWith("'"))
                    {
                        strSheetTableName = strSheetTableName.Substring(1, strSheetTableName.Length - 2);
                    }
                    //过滤无效SheetName   
                    if (strSheetTableName.Contains("$") && strSheetTableName.Replace("'", "").EndsWith("$"))
                    {
                        excelSheets.Add(strSheetTableName.Substring(0, strSheetTableName.Length - 1));
                    }

                }
                return excelSheets.ToArray();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
                return null;
            }
            finally
            {
                // 清理    
                if (objConn != null)
                {
                    objConn.Close();
                    objConn.Dispose();
                }
                if (dt != null)
                {
                    dt.Dispose();
                }
            }
        }
    
    }
}