C# 从Excel导入数据期间显示进度条控件devexpress
我有这样的表格导入数据Excel: 第一种情况是,当我选择文件Excel然后按process时,我的表单将显示process in progress bar control devexpress 我的代码:C# 从Excel导入数据期间显示进度条控件devexpress,c#,excel,winforms,devexpress,progress-bar,C#,Excel,Winforms,Devexpress,Progress Bar,我有这样的表格导入数据Excel: 第一种情况是,当我选择文件Excel然后按process时,我的表单将显示process in progress bar control devexpress 我的代码: string constr = "Provider = Microsoft.ACE.OLEDB.12.0; Data Source =" + txtPath.Text + "; Extended Properties =\"Excel 8.0; HDR = Yes;\";"; Ol
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$]", con);
con.Open();
OleDbDataReader odr = ocmd.ExecuteReader();
string kode = "";
string nama = "";
string satuan = "";
string isAktif = "";
string kodeRek = "";
while (odr.Read())
{
//get value from excel file column
kode = odr[0].ToString();
nama = odr[1].ToString();
satuan = odr[2].ToString();
isAktif = odr[3].ToString();
kodeRek = odr[4].ToString();
//connection
if (koneksi_manual.con.State == ConnectionState.Open)
{
koneksi_manual.con.Close();
}
koneksi_manual.con.Open();
//insert data excel to oracle database
OracleCommand cd = new OracleCommand();
cd.CommandText = @"INSERT INTO RAWMATERIAL(ID_BAHAN, KODE_BAHAN, NAMA_BAHAN, UNIT, ISAKTIF, JENIS_BAHAN,
HARGA_BAHAN, CREATEDBY, CREATEDDATE, MODIFIEDBY, MODIFIEDDATE)
(SELECT SQ_BAHAN.NEXTVAL, '" + kode + "', '" + nama + "', '" + satuan + "', '" + isAktif +
"', '" + null + "', '" + null + "', '" + Program.UserLogin + "', '" + DateTime.Now +
"', '" + Program.UserLogin + "', '" + DateTime.Now +
"' FROM DUAL WHERE NOT EXISTS(SELECT * FROM RAWMATERIAL WHERE NAMA_BAHAN='" + nama + "'))";
cd.Connection = koneksi_manual.con;
cd.ExecuteReader();
}
odr.Close();
当我将数据从Excel插入Oracle数据库时,它运行良好
在将数据从Excel插入到Oracle数据库的过程中,有人能建议如何显示进度条控制过程吗?使这一过程更容易
1) 在设计视图中将BackgroundWorker
控件拖放到表单中
2) 注册DoWork
和ProgressChanged
事件处理程序
backgroundWorker1.DoWork += BackgroundWorker1_DoWork;
backgroundWorker1.ProgressChanged += BackgroundWorker1_ProgressChanged;
3) 设置要插入的记录数
OleDbCommand ocCount = new OleDbCommand("SELECT COUNT(*) FROM [Sheet1$]", con);
con.Open();
int count = (int)ocCount.ExecuteScalar();
progressbarcontrol.Maximum = count;
4) 在BackgroundWorker1\u 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
true,并在循环中调用ReportProgress
方法
backgroundWorker1.WorkerReportsProgress = true;
int progress = 0;
while (odr.Read())
{
backgroundWorker1.ReportProgress(++progress);
}
6) 增加BackgroundWorker1\u ProgressChanged
事件处理程序中的值
private void BackgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
progressbarcontrol.Value = e.ProgressPercentage;
}
此外,您还可以在RunWorkerCompleted
事件处理程序中重置进度条。由works great给出的答案非常有用。解释得很清楚。因为我使用的是devexpress,所以我只需要添加一些更改就可以让它为我工作。万一有人需要它
private void BackgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
progressbarcontrol.Value = e.ProgressPercentage;
}
在步骤3中:
progressbarcontrol.Maximum = count;
改为:
progressbarcontrol.Properties.Maximum = count;
progressbarcontrol.EditValue = e.ProgressPercentage;
并在以下内容后添加此行:
backgroundWorker1.RunWorkerAsync();
在步骤6中:
progressbarcontrol.Value = e.ProgressPercentage;
改为:
progressbarcontrol.Properties.Maximum = count;
progressbarcontrol.EditValue = e.ProgressPercentage;
希望有帮助 谢谢,…它可以工作,…我只是添加了查询来检查excel文件的计数,并将其设置为
progressbarcontrol.max=count代码>并且它可以工作,。。很好,…那太有用了。。