Preface

The function of exporting Excel tables is available in most forms. If a class is encapsulated, calling this class directly when using it is not more convenient? , which also reduces the duplication of code, why not?

Operation

First add a reference, select Microsoft Office 16.0 Object Library, and Microsoft Excel 16.0 Object Library in com.

C#_Call an encapsulated class to implement the function of exporting Excel tables

Add namespace:

using Microsoft.Office.Interop.Excel;//导出Excel using Microsoft.Office.Core; using System.Data.OleDb; using System.Windows.Forms;

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Create a new class and name it outputExcel, the code is as follows:

public class outputExcel { //导出excel public void RExcel(string name, DataGridView dgv) { //总可见行列数 int rowCount = dgv.Rows.GetRowCount(DataGridViewElementStates.Visible); int colCount = dgv.Columns.GetColumnCount(DataGridViewElementStates.Visible); //如果没有数据 if (dgv.Rows.Count == 0 || rowCount == 0) { MessageBox.Show("表中没有数据", "提示"); } else { //创建文件的路径 SaveFileDialog save = new SaveFileDialog(); save.Filter = "excel files(*.xlsx)|*.xlsx"; save.Title = "请选择要导出数据的位置"; save.FileName = name + DateTime.Now.ToLongDateString(); if (save.ShowDialog() == DialogResult.OK) { string fileName = save.FileName; //创建excel对象 Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application(); if (excel == null) { MessageBox.Show("Excel无法启动", "提示"); return; } //创建工作薄 Microsoft.Office.Interop.Excel.Workbook excelBook = excel.Workbooks.Add(true); Microsoft.Office.Interop.Excel.Worksheet excelSheet = (Microsoft.Office.Interop.Excel.Worksheet)excelBook.Worksheets[1]; //生成字段名 int k = 0; for (int i = 0; i < dgv.ColumnCount; i++) { if (dgv.Columns[i].Visible)//不导出隐藏列 { excel.Cells[1, k + 1] = dgv.Columns[i].HeaderText; k++; } } //填充数据 for (int i = 0; i < dgv.RowCount; i++) { k = 0; for (int j = 0; j < dgv.ColumnCount; j++) { if (dgv.Columns[j].Visible)//不导出隐藏的列 { if (dgv[j, i].ValueType == typeof(string)) { excel.Cells[i + 2, k + 1] = "" + dgv[j, i].Value.ToString(); } else { excel.Cells[i + 2, k + 1] = dgv[j, i].Value.ToString(); } } k++; } } try { excelBook.Saved = true; excelBook.SaveCopyAs(fileName); MessageBox.Show("导出成功！"); } catch { MessageBox.Show("导出文件失败，文件可能正在使用中", "提示"); } } } } }

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When the form needs to use this Function, you need to write the following code:

private void btnoutExcel_Click(object sender, EventArgs e) { outputExcel form1 = new outputExcel(); form1.RExcel("", dataGridView1); }

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