导入excel时遇到的问题

Question

我的EXCEL数据如下:  ID aaaaa 
bbbbb 
12345 
23456 当导入后,发现12345及23456   跟本没有导入

Answer 1

在 excel里数据前加上“'”就好了，但是这样用户体验不好，还有办法吗

Answer 2

这个应该是你后台程序的问题，跟Excel是没关系的。

Answer 3

 DataTable Excel_UserInfo = new DataTable();
string strConn = @"Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + fileInfo.FullName + ";" + "Extended Properties=\"Excel 12.0;HDR=YES;IMEX=1;\"";
                string strExcel = "select * from [sheet1$]";                using (OleDbDataAdapter adaptor = new OleDbDataAdapter(strExcel, strConn))
                {
                    DataSet ds = new DataSet();
                    adaptor.Fill(ds);
                    Excel_UserInfo = ds.Tables[0];
                }数字前面加单引号

Answer 4

 private DataSet importExcelToDataSet(string FilePath,string strSheet)
        {
            string strConn;
            strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + FilePath +
           ";Extended Properties=Excel 8.0;";
           OleDbConnection conn = new OleDbConnection(strConn);
            OleDbDataAdapter myCommand = new OleDbDataAdapter("SELECT * FROM ["+strSheet+"$]", strConn);
            DataSet myDataSet = new DataSet();
            try
            {
                myCommand.Fill(myDataSet);
            }
            catch (Exception ex)
            {
               // throw new InvalidFormatException("该Excel文件的工作表的名字不正确," + ex.Message);
                MessageBox.Show("该Excel文件的工作表的名字不正确," + ex.Message);
            }
            return myDataSet;
        }
返回DataSet 然后批量插入数据库就好了啊。

Answer 5

怎么判断 要导入 的是xls还是xlsx

Answer 6

 string excelConnectionStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\"";
                OleDbConnection olconnection = new OleDbConnection(excelConnectionStr);
                olconnection.Open();
                OleDbCommand cmd = new OleDbCommand("select * from [" + DropDownList2.SelectedItem.Text.ToString().Trim() + "]", olconnection);
                OleDbDataReader dr = cmd.ExecuteReader();
                if (dr.Read())
                {
                    SqlConnection conn = BuildConnection.Buildsqlconnection();
                    SqlBulkCopy bulkcopy = new SqlBulkCopy(conn);
                    for (int i = 0; i < CheckBoxList1.Items.Count; i++)
                    {
                        if (CheckBoxList1.Items[i].Selected == true)
                        {
                            bulkcopy.ColumnMappings.Add(CheckBoxList1.Items[i].Text.ToString().Trim(), CheckBoxList1.Items[i].Text.ToString().Trim());
                        }
                    }
                    cmd.Connection.Close();
                    OleDbDataAdapter da = new OleDbDataAdapter(cmd);
                    DataTable dt = new DataTable();
                    da.Fill(dt);
                    bulkcopy.DestinationTableName = tableName;
                    bulkcopy.WriteToServer(dt);

Answer 7

怎么判断 要导入 的是xls还是xlsx 
-----------------------------------------
截取后缀名就可以了!

Answer 8

页面没有刷新，没有从新加载。可以用ispostback 判断一下。

Answer 9

 //根据路径打开一个excel文件并将数据填充到dataset中
            string strConn = @"Provider = Microsoft.Ace.OLEDB.12.0; Data Source = " + filePath + "; Extended Properties = 'Excel 12.0;HDR = NO; IMEX=1'";
            OleDbConnection conn = new OleDbConnection(strConn);
            conn.Open();
            string strExcel = "";
            strExcel = "select * from [sheet1$]";
            DataTable schemaTable = conn.GetOleDbSchemaTable(System.Data.OleDb.OleDbSchemaGuid.Tables, null);
            string tableName = schemaTable.Rows[0][2].ToString().Trim();
            OleDbDataAdapter myCommand = new OleDbDataAdapter(strExcel, strConn);
            DataSet ds = new DataSet();
            myCommand.Fill(ds, "table1");
            //根据DataGridView的列构造一个DataTable
            DataTable td = ds.Tables[0];
            try
            {
                //MessageBox.Show(td.ToString());
                foreach (DataGridViewColumn dgvc in dgv.Columns)
                {
                    if (dgvc.Visible && dgvc.CellType != typeof(DataGridViewCheckBoxCell))
                    {
                        DataColumn dc = new DataColumn();
                        dc.ColumnName = dgvc.DataPropertyName;
                        dc.DataType = dgvc.ValueType;
                        //MessageBox.Show(dc.ToString());
                        td.Columns.Add(dc);
                    }
                }                //根据excel的行逐一对上面的构造的datatable的列进行赋值                for (int i = 0; i < ds.Tables[0].Rows.Count - 1; i++)
                {
                    //int j = 0;
                    DataRow dr = td.NewRow();
                    DataRow excelRow = ds.Tables[0].Rows[i];
                    foreach (DataColumn dc in td.Columns)
                    {
                        dr[dc] = excelRow[i];
                        //MessageBox.Show(dr[dc].ToString());
                        i++;
                    }
                    td.Rows.Add(dr);
                }
                //在datagridview中显示导入的数据
                dgv.DataSource = td;
            }
            catch (Exception)
            {
                MessageBox.Show("该表已存在你即将导入的excel文件...,请点击清空按钮重新导入...");
                return;
            }
            finally
            {
                conn.Close();
            }