C # Data Center reconstruction-export an excel table

C # Data Center reconstruction-export an excel table
Preface

In data center reconstruction, a user-friendly function is to export data to excel and summarize it.

Code

Using System; using System. collections. generic; using System. linq; using System. text; using System. threading. tasks; using Microsoft. office. interop. excel; using Microsoft. office. core; using System. windows. forms; using System. data. sqlClient; using System. data. oleDb; using System. threading; namespace UI {public class Excel {public void RExcel (string name, DataGridView dgv) {// total number of visible columns, total number of visible rows int colCount = dgv. colu Mns. getColumnCount (maid. visible); int rowCount = dgv. rows. getRowCount (maid. visible); // if (dgv. rows. count = 0 | rowCount = 0) {MessageBox. show ("no data in the table", "prompt");} else {// select the path to the created file SaveFileDialog save = new SaveFileDialog (); save. filter = "excel files (*. xlsx) | *. xlsx "; save. title = "select the location of the data to be exported"; save. fileName = name + DateTime. now. T OLongDateString (); if (save. showDialog () = DialogResult. OK) {string fileName = save. fileName; // MessageBox. show (save. fileName); // create an Excel Object Microsoft. office. interop. excel. application excel = new Microsoft. office. interop. excel. application (); if (excel = null) {MessageBox. show ("Excel cannot be started", "prompt"); return ;}// create an Excel worksheet Microsoft. office. interop. excel. workbook excelBook = excel. workbooks. add (true ); Microsoft. office. interop. excel. worksheet excelSheet = (Microsoft. office. interop. excel. worksheet) excelBook. worksheets [1]; // excel. application. workbooks. add (true); // generate the field name int k = 0; for (int I = 0; I <dgv. columnCount; I ++) {if (dgv. columns [I]. visible) // do not export hidden columns {excel. cells [1, k + 1] = dgv. columns [I]. headerText; k ++ ;}// fill in the data for (int I = 0; I <dgv. rowCount; I ++) {k = 0; for (int j = 0; J <dgv. columnCount; j ++) {if (dgv. columns [j]. visible) // do not export hidden columns {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 ("exported successfully! ");} Catch {MessageBox. Show (" Export failed, file may be in use "," prompt ");}}}}}}

The above is in our method class, in the interface, if we need to use this method:

 

 

private void btnExcel_Click(object sender, EventArgs e){    string name = "";    Excel ex = new Excel();    ex.RExcel(name,dataGridView1);}

Summary

Although this code was used in the system after I found it online and modified it, I am not sure exactly how it runs, but it is just the beginning, these things will become vulnerable after our research.