C# WinFrom 导入Excel文件，显示进度条
因为WINForm程序是在64位上运行如果使用另外一种快速的读取Excel的方法会报“未在本地计算机上注册“Microsoft.Jet.OLEDB.12.0”提供程序”
所以我就换了现在这种读取有点慢的方式
PS 采用上一种方式要更改成32位，由于我的系统有其他需求只有64位支持，所以不得不放弃，而且也需要客户端注册这个
Form1
控件 一个显示路径的TextBox: txt_ExcelPath
两个按钮 Button:btn_selectpath,btn_savedata
一个backgroundWorker1组件
////// 选择Excel文件 /// /// /// private void btn_selectpath_Click(object sender, EventArgs e) { OpenFileDialog openFile = new OpenFileDialog(); openFile.Filter = "Excel(*.xlsx)|*.xlsx|Excel(*.xls)|*.xls"; openFile.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop); openFile.Multiselect = false; if (openFile.ShowDialog() == DialogResult.OK) { txt_ExcelPath.Text = openFile.FileName; } }
////// 数据导入 /// /// /// private void btn_datainto_Click(object sender, EventArgs e) { dt = new System.Data.DataTable(); this.backgroundWorker1.RunWorkerAsync(); // 运行 backgroundWorker 组件 backgroundWorker1.WorkerReportsProgress = true;
backgroundWorker1.WorkerSupportsCancellation = true; RadProcessBar form = new RadProcessBar(this.backgroundWorker1);// 显示进度条窗体 form.ShowDialog(this); form.Close(); }
此处的RadProcessBar 是显示进度条的窗体（进度条期间禁止其他操作）
以下是backgroundWorker1组件的一些事件
////// 完成进程工作之后的处理动作 /// /// /// private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { if (e.Error != null) { MessageBox.Show(e.Error.Message); } else if (e.Cancelled) { dt = new System.Data.DataTable(); //如果取消重新定义datatable } else { dataGridView1.DataSource = dt; } } private System.Data.DataTable dt = new System.Data.DataTable(); //你可以在这个方法内，实现你的调用，方法等。 private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { //System.Data.DataTable dt = GetDataFromExcelByCom(); //dataGridView1.DataSource = dt; BackgroundWorker worker = sender as BackgroundWorker; string[] columnName = { "1", "2", "3", "4", "5", "6", "7", "8" }; string excelFilePath = txt_ExcelPath.Text.Trim(); Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application(); Microsoft.Office.Interop.Excel.Sheets sheets; object oMissiong = System.Reflection.Missing.Value; Microsoft.Office.Interop.Excel.Workbook workbook = null; try { if (app == null) return ; workbook = app.Workbooks.Open(excelFilePath, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong); sheets = workbook.Worksheets; //将数据读入到DataTable中 Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)sheets.get_Item(2);//读取第二张表 次数我的测试Excel中数据在2表中 if (worksheet == null) return ; int iRowCount = worksheet.UsedRange.Rows.Count; int iColCount = 8;// worksheet.UsedRange.Columns.Count;//个人根据需求选择数据源的列数 //生成列头 for (int i = 0; i < iColCount; i++) { var name = columnName[i]; //"column" + i; while (dt.Columns.Contains(name)) name = name + "_1";//重复行名称会报错。 dt.Columns.Add(new DataColumn(name, typeof(string))); } //生成行数据 Microsoft.Office.Interop.Excel.Range range; int rowIdx = 2;//第一行为标题 实际数据从第二行开始 for (int iRow = rowIdx; iRow <= iRowCount; iRow++) { DataRow dr = dt.NewRow(); for (int iCol = 1; iCol <= iColCount; iCol++) { range = (Microsoft.Office.Interop.Excel.Range)worksheet.Cells[iRow, iCol]; dr[iCol - 1] = (range.Value2 == null) ? "" : range.Text.ToString(); } dt.Rows.Add(dr); Thread.Sleep(0); worker.ReportProgress(iRow*100/iRowCount);//加载进度条 if (worker.CancellationPending) // 如果用户取消则跳出处理数据代码 { e.Cancel = true; break; } } } catch { return; } finally { workbook.Close(false, oMissiong, oMissiong); System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook); workbook = null; app.Workbooks.Close(); app.Quit(); System.Runtime.InteropServices.Marshal.ReleaseComObject(app); app = null; } }
进度条Form RadProcessBar
一个progressBar1 一个按钮
public partial class RadProcessBar : Form { private BackgroundWorker backgroundWorker1; //ProcessForm 窗体事件(进度条窗体) public RadProcessBar(BackgroundWorker backgroundWorker1) { InitializeComponent(); this.backgroundWorker1 = backgroundWorker1; this.backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged); this.backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted); } void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { this.Close();//执行完之后，直接关闭页面 } void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e) { this.progressBar1.Value = e.ProgressPercentage; } private void btn_cancel_Click(object sender, EventArgs e) { this.backgroundWorker1.CancelAsync(); this.btn_cancel.Enabled = false; this.Close(); } }
posted on
2015-07-08 17:36 Jruik.shen 阅读(
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