在从 Excel 导入数据期间显示进度条控件 devexpress

Question

我有这样的表单导入数据 Excel：

第一个场景，当我 select 文件 Excel 然后按进程时，我的表单将在进度条控制 devexpress 中显示进程。

我的代码：

    string constr = "Provider = Microsoft.ACE.OLEDB.12.0; Data Source =" + txtPath.Text + "; Extended Properties =\"Excel 8.0; HDR = Yes;\";";
OleDbConnection con = new OleDbConnection(constr);

OleDbCommand ocmd = new OleDbCommand("SELECT * FROM[Sheet1$]", con);
con.Open();
OleDbDataReader odr = ocmd.ExecuteReader();
string kode = "";
string nama = "";
string satuan = "";
string isAktif = "";
string kodeRek = "";

while (odr.Read())
{
    //get value from excel file column
    kode = odr[0].ToString();
    nama = odr[1].ToString();
    satuan = odr[2].ToString();
    isAktif = odr[3].ToString();
    kodeRek = odr[4].ToString();

    //connection
    if (koneksi_manual.con.State == ConnectionState.Open)
    {
        koneksi_manual.con.Close();
    }
    koneksi_manual.con.Open();

    //insert data excel to oracle database
    OracleCommand cd = new OracleCommand();
    cd.CommandText = @"INSERT INTO RAWMATERIAL(ID_BAHAN, KODE_BAHAN, NAMA_BAHAN, UNIT, ISAKTIF, JENIS_BAHAN, 
                        HARGA_BAHAN, CREATEDBY, CREATEDDATE, MODIFIEDBY, MODIFIEDDATE)
                        (SELECT SQ_BAHAN.NEXTVAL, '" + kode + "', '" + nama + "', '" + satuan + "', '" + isAktif +
                        "', '" + null + "', '" + null + "', '" + Program.UserLogin + "', '" + DateTime.Now +
                        "', '" + Program.UserLogin + "', '" + DateTime.Now +
                        "' FROM DUAL WHERE NOT EXISTS(SELECT * FROM RAWMATERIAL WHERE NAMA_BAHAN='" + nama + "'))";
    cd.Connection = koneksi_manual.con;
    cd.ExecuteReader();
}
odr.Close();

当我从 Excel 向 Oracle 数据库插入数据时运行很好。

谁能建议如何在从 Excel 向 Oracle 数据库插入数据期间显示进度条控制过程？

Answer 1

BackgroundWorker 让这更容易。

1) 将 BackgroundWorker 控件拖放到设计视图中的窗体。

2) 注册 DoWork 和 ProgressChanged 事件处理程序。

backgroundWorker1.DoWork += BackgroundWorker1_DoWork;
backgroundWorker1.ProgressChanged += BackgroundWorker1_ProgressChanged;

3) 设置要插入的记录数。

OleDbCommand ocCount = new OleDbCommand("SELECT COUNT(*) FROM [Sheet1$]", con);

con.Open();
int count = (int)ocCount.ExecuteScalar();

progressbarcontrol.Maximum = count;

4) 在BackgroundWorker1_DoWork 事件处理程序

中移动Insert 循环

private void BackgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
    // insert loop
}

5) 设置WorkerReportsProgress为真，并在循环内调用ReportProgress方法

backgroundWorker1.WorkerReportsProgress = true;
int progress = 0;
while (odr.Read())
{
    backgroundWorker1.ReportProgress(++progress);
}

6) 增加 BackgroundWorker1_ProgressChanged 事件处理程序中的值。

private void BackgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
    progressbarcontrol.Value = e.ProgressPercentage;
}

此外，您可以在 RunWorkerCompleted 事件处理程序中重置进度条。

Answer 2

jhmt works great. Very nice and clean explanation. Just adding some changes I needed to make it work for me, since I'm using devexpress ProgressBarControl给出的答案。万一有人需要它...

在第 3 步中：

progressbarcontrol.Maximum = count;

更改为：

progressbarcontrol.Properties.Maximum = count;

并在之后添加此行：

backgroundWorker1.RunWorkerAsync();

在第 6 步中：

progressbarcontrol.Value = e.ProgressPercentage;

更改为：

progressbarcontrol.EditValue = e.ProgressPercentage;

希望对您有所帮助！

在从 Excel 导入数据期间显示进度条控件 devexpress

Show a Progress Bar Control devexpress during import data from Excel

c#

excel

devexpress

winforms

progress-bar