所以我正在使用EPPlus和C＃，并且我有一个带有一些文本字段的表单，并且试图将文本字段值添加到下一个可用的空行中，但遇到了一些麻烦。我尝试了几种不同的方法来查找下一个可用的空行，以将文本字段值附加到该行，因为它具有列标题，因此总是跳过第一行。
我最接近的是使它不断写入第2行和第3行，但它始终会写入相同的信息。
//create an instance of the first sheet in the loaded file
ExcelWorksheet worksheet = excelPackage.Workbook.Worksheets["Sheet1"];
var r = worksheet.Dimension.End.Row;
for (int i = 1; i <= r; i++)
{
worksheet.Cells[i, 1].Value = comboBox1.Text;
worksheet.Cells[i, 2].Value = textBox1.Text;
worksheet.Cells[i, 3].Value = textBox2.Text;
worksheet.Cells[i, 4].Value = textBox3.Text;
worksheet.Cells[i, 5].Value = textBox4.Text;
worksheet.Cells[i, 6].Value = richTextBox1.Text;
}
这里是我的所有代码，以防您需要查看我的工作方式或工作方式。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using OfficeOpenXml;
using System.IO;
using OfficeOpenXml.Style;
namespace NetworkManager
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public void Form1_Load(object sender, EventArgs e)
{
StreamReader sr = new StreamReader(@".\Owners.txt");
string x = sr.ReadToEnd();
string[] y = x.Split('\n');
foreach (string s in y)
{
comboBox1.Items.Add(s);
}
}
private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
// Create a new blank package/file
using (var package = new ExcelPackage())
{
// Add a new worksheet to the empty workbook
ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("Sheet1");
// Set the header text
worksheet.HeaderFooter.OddHeader.CenteredText = "&24&U&\"Arial,Regular Bold\" Router IP" + textBox5;
//Set column width
worksheet.Column(1).Width = 20;
worksheet.Column(2).Width = 25;
worksheet.Column(3).Width = 20;
worksheet.Column(4).Width = 25;
worksheet.Column(5).Width = 25;
worksheet.Column(6).Width = 25;
// Border and Font for Column Headers
worksheet.Cells["A1:F1"].Style.Border.BorderAround(ExcelBorderStyle.Thick); // Thick border around Column Headers
worksheet.Cells["A1:F1"].Style.Font.Bold = true; // Bold text for Column Headers
worksheet.Cells["A1:F1"].Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
//Add column headers
worksheet.Cells[1, 1].Value = "Owner";
worksheet.Cells[1, 2].Value = "Device Name";
worksheet.Cells[1, 3].Value = "Ip Address";
worksheet.Cells[1, 4].Value = "Mac Address 1";
worksheet.Cells[1, 5].Value = "Mac Address 2";
worksheet.Cells[1, 6].Value = "Notes";
// set some document properties
package.Workbook.Properties.Title = "NetworkManager";
package.Workbook.Properties.Author = "David Goodwin";
package.Workbook.Properties.Comments = "This is a program to help manager your network addresses";
//Save your file
FileInfo fi = new FileInfo(@".\ExportedDoc\NetworkManager.xlsx");
package.SaveAs(fi);
MessageBox.Show("New File Created!");
}
}
private void loadToolStripMenuItem_Click(object sender, EventArgs e)
{
}
private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
{
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
Close();
}
private void button1_Click(object sender, EventArgs e) // Append data to already existing excel document
{
//the path of the file
string filePath = ".\\ExportedDoc\\NetworkManager.xlsx";
//create a fileinfo object of an excel file on the disk
FileInfo file = new FileInfo(filePath);
//create a new Excel package from the file
using (ExcelPackage excelPackage = new ExcelPackage(file))
{
//create an instance of the first sheet in the loaded file
ExcelWorksheet worksheet = excelPackage.Workbook.Worksheets["Sheet1"];
var r = worksheet.Dimension.End.Row;
for (int i = 1; i <= r; i++)
{
worksheet.Cells[i, 1].Value = comboBox1.Text;
worksheet.Cells[i, 2].Value = textBox1.Text;
worksheet.Cells[i, 3].Value = textBox2.Text;
worksheet.Cells[i, 4].Value = textBox3.Text;
worksheet.Cells[i, 5].Value = textBox4.Text;
worksheet.Cells[i, 6].Value = richTextBox1.Text;
}
/*
// check to find last empty row to add new rows.
int rowCount = worksheet.Dimension.End.Row;
int colCount = worksheet.Dimension.End.Column;
for (int row = 1; row <= rowCount; row++)
{
// Create a bool
bool RowIsEmpty = true;
for (int col = 1; col <= colCount; col++)
{
// check if the cell is empty or not
if (worksheet.Cells[row, col].Value != null)
{
RowIsEmpty = false;
}
}
// if row is empty, hit flag and write data
if (RowIsEmpty == true)
{
MessageBox.Show("Test");
// write data to next available row
int i = 1;
foreach (var item in worksheet.Cells)
{
worksheet.Cells[1, i].Value = comboBox1.Text;
worksheet.Cells[2, i].Value = textBox1.Text;
worksheet.Cells[3, i].Value = textBox2.Text;
worksheet.Cells[4, i].Value = textBox3.Text;
worksheet.Cells[5, i].Value = textBox4.Text;
worksheet.Cells[6, i].Value = richTextBox1.Text;
i++;
}
}
}
*/
/*
// add some data
worksheet.Cells["A2"].Value = comboBox1.Text;
worksheet.Cells["B2"].Value = textBox1.Text;
worksheet.Cells["C2"].Value = textBox2.Text;
worksheet.Cells["D2"].Value = textBox3.Text;
worksheet.Cells["E2"].Value = textBox4.Text;
worksheet.Cells["F2"].Value = richTextBox1.Text;
*/
// after adding the items, clear the fields
textBox1.Clear();
textBox2.Clear();
textBox3.Clear();
textBox4.Clear();
textBox5.Clear();
richTextBox1.Clear();
//save the changes
excelPackage.Save();
}
}
}
}
所以这似乎行得通，但是我不确定它是否有效。我还通过手动删除中间的一行进行了测试，它仍然可以到达列的末尾，这很好，我可以考虑删除第1行和rowCount之间的空白行。
//Cells only contains references to cells with actual data
int rowCount = worksheet.Dimension.End.Row;
int colCount = worksheet.Dimension.End.Column;
var cells = worksheet.Cells;
var rowIndicies = cells
.Select(c => c.Start.Row)
.Distinct()
.ToList();
//Skip the header row
for (var i = 1; i <= rowCount; i++)
{
// add some data
worksheet.Cells[rowCount + 1, 1].Value = comboBox1.Text;
worksheet.Cells[rowCount + 1, 2].Value = textBox1.Text;
worksheet.Cells[rowCount + 1, 3].Value = textBox2.Text;
worksheet.Cells[rowCount + 1, 4].Value = textBox3.Text;
worksheet.Cells[rowCount + 1, 5].Value = textBox4.Text;
worksheet.Cells[rowCount + 1, 6].Value = richTextBox1.Text;
}
答案 0 :(得分：0)
如果您要做的只是转到工作表的最底部，并使用Form控件中的值添加一行，那么您根本不需要for循环。这样的事情应该做到：
//Cells only contains references to cells with actual data
int rowCount = worksheet.Dimension.End.Row;
int colCount = worksheet.Dimension.End.Column;
var cells = worksheet.Cells;
var maxRow = cells
.Select(c => c.Start.Row)
.Max();
//Go to the next row after the max
maxRow++;
worksheet.Cells[maxRow, 1].Value = comboBox1.Text;
worksheet.Cells[maxRow, 2].Value = textBox1.Text;
worksheet.Cells[maxRow, 3].Value = textBox2.Text;
worksheet.Cells[maxRow, 4].Value = textBox3.Text;
worksheet.Cells[maxRow, 5].Value = textBox4.Text;
worksheet.Cells[maxRow, 6].Value = richTextBox1.Text;
让我知道我是否误会了。