将Excel数据导入Visual Studio 2010中的DataGridView

请使用以下代码帮助修复从Excel文档导入数据到DataGridView控件：

 private void button5_Click(object sender, EventArgs e) { Excel.Application app = new Microsoft.Office.Interop.Excel.Application(); Excel.Workbook workbook =app.Workbooks.Open(@"C:\Users\Admin\Desktop\Dropbox\Vandit's Folder\Internship\test.xlsx"); Excel.Worksheet worksheet = workbook.ActiveSheet; rcount = worksheet.UsedRange.Rows.Count; int i = 0; for(;i<rcount;i++) { dataGridView1.Rows[i].Cells["Column1"].Value = worksheet.Cells[i + 1, 1].Value; dataGridView1.Rows[i].Cells["Column2"].Value = worksheet.Cells[i + 1, 2].Value; } } 

当我运行这段代码时，我总是得到一个例外

 "Index was out of range. Must be non-negative and less than the size of the collection." "Parameter name: index." 

Answer 1

假设dataGridView1有2列，

 private void button5_Click(object sender, EventArgs e) { Excel.Application app = new Microsoft.Office.Interop.Excel.Application(); Excel.Workbook workbook =app.Workbooks.Open(@"C:\Users\Admin\Desktop\Dropbox\Vandit's Folder\Internship\test.xlsx"); Excel.Worksheet worksheet = workbook.ActiveSheet; rcount = worksheet.UsedRange.Rows.Count; int i = 0; for(;i 

假设dataGridView1有0列，

 private void button5_Click(object sender, EventArgs e) { Excel.Application app = new Microsoft.Office.Interop.Excel.Application(); Excel.Workbook workbook =app.Workbooks.Open(@"C:\Users\Admin\Desktop\Dropbox\Vandit's Folder\Internship\test.xlsx"); Excel.Worksheet worksheet = workbook.ActiveSheet; rcount = worksheet.UsedRange.Rows.Count; int i = 0; //Initializing Columns dataGridView1.ColumnCount = worksheet.UsedRange.Columns.Count; for(int x=0;x 

Answer 2

你可以添加如下的行

 for(int i=0;i 

您正在做的是设置gridview的现有行的值。 如果gridview没有索引给出的行，那么你将获得exception

但没有所有这些，您可以使用Ado.net并从excel读取数据并将其绑定到gridview。 查看以下知识库文章中的示例代码

 // Create connection string variable. Modify the "Data Source" // parameter as appropriate for your environment. String sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + Server.MapPath("../ExcelData.xls") + ";" + "Extended Properties=Excel 8.0;"; // Create connection object by using the preceding connection string. OleDbConnection objConn = new OleDbConnection(sConnectionString); // Open connection with the database. objConn.Open(); // The code to follow uses a SQL SELECT command to display the data from the worksheet. // Create new OleDbCommand to return data from worksheet. OleDbCommand objCmdSelect =new OleDbCommand("SELECT * FROM myRange1", objConn); // Create new OleDbDataAdapter that is used to build a DataSet // based on the preceding SQL SELECT statement. OleDbDataAdapter objAdapter1 = new OleDbDataAdapter(); // Pass the Select command to the adapter. objAdapter1.SelectCommand = objCmdSelect; // Create new DataSet to hold information from the worksheet. DataSet objDataset1 = new DataSet(); // Fill the DataSet with the information from the worksheet. objAdapter1.Fill(objDataset1, "XLData"); // Bind data to DataGrid control. DataGrid1.DataSource = objDataset1.Tables[0].DefaultView; DataGrid1.DataBind(); // Clean up objects. objConn.Close(); 

Answer 3

此错误意味着在gridview中不存在抛出错误的索引，或者excel文件中缺少列。

datagridView中的索引数必须等于您为datagridview发送的字段数。

Answer 4

尝试以下代码

  DialogResult dialogResult = MessageBox.Show("Sure", "Some Title",MessageBoxButtons.YesNo); if (dialogResult == DialogResult.Yes) { dt = dsSource.Tables[Index]; dt.Reset(); Excel.Workbook workbook; Excel.Worksheet NwSheet; Excel.Range ShtRange; Microsoft.Office.Interop.Excel.Application ExcelObj = new Microsoft.Office.Interop.Excel.Application(); OpenFileDialog filedlgExcel = new OpenFileDialog(); filedlgExcel.Title = "Select file"; filedlgExcel.InitialDirectory = @"c:\"; //filedlgExcel.FileName = textBox1.Text; filedlgExcel.Filter = "Excel Sheet(*.xlsx)|*.xlsx|All Files(*.*)|*.*"; filedlgExcel.FilterIndex = 1; filedlgExcel.RestoreDirectory = true; if (filedlgExcel.ShowDialog() == DialogResult.OK) { workbook = ExcelObj.Workbooks.Open(filedlgExcel.FileName, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); NwSheet = (Excel.Worksheet)workbook.Sheets.get_Item(1); ShtRange = NwSheet.UsedRange; for (int Cnum = 1; Cnum <= ShtRange.Columns.Count; Cnum++) { dt.Columns.Add(new DataColumn((ShtRange.Cells[1, Cnum] as Excel.Range).Value2.ToString())); } dt.AcceptChanges(); string[] columnNames = new String[dt.Columns.Count]; for (int i = 0; i < dt.Columns.Count; i++) { columnNames[0] = dt.Columns[i].ColumnName; } //string[] columnNames = (from dc in dt.Columns.Cast() select dc.ColumnName).ToArray(); for (int Rnum = 2; Rnum <= ShtRange.Rows.Count; Rnum++) { DataRow dr = dt.NewRow(); for (int Cnum = 1; Cnum <= ShtRange.Columns.Count; Cnum++) { if ((ShtRange.Cells[Rnum, Cnum] as Excel.Range).Value2 != null) { dr[Cnum - 1] = (ShtRange.Cells[Rnum, Cnum] as Excel.Range).Value2.ToString(); } } dt.Rows.Add(dr); dt.AcceptChanges(); } workbook.Close(true, Missing.Value, Missing.Value); ExcelObj.Quit(); dataGridView1.DataSource = dt;