Question

我使用在此特定网站上找到的代码成功显示了数据。问题是，字体的颜色，粗体或斜体不会被转移。我需要读取特定单元格的代码并将其转换为HTML字符串并在其他地方将其显示为文本框。所以我真的需要学习如何导入颜色，粗体或斜体，所以我也可以转换它。我将永远感激任何帮助我的灵魂。以下是我目前的代码。

string PathConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + textBox1.Text + ";Extended Properties=\"Excel 8.0;HDR=Yes;\";";

OleDbConnection conn = new OleDbConnection(PathConn);
OleDbDataAdapter myDataAdapter = new OleDbDataAdapter("Select * from [sheet1$]", conn);
DataTable dt = new DataTable();

myDataAdapter.Fill(dt);

dataGridView1.DataSource = dt;

Answer 1

以下打开app文件夹中的Excel文件，获取单元格值，前颜色，查看是否为范围sheet1单元格H2设置了粗体和斜体。请注意，有相当数量的代码是有保证的，以便在完成我们的工作后释放此处使用的所有对象。

using System;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel;

namespace WindowsFormsApplication1_CS
{
    public class ExcelCode
    {
        public System.Drawing.Color ForeColor;
        public ExcelCode() { }

        public string GetCellValue(
            string FileName,
            string SheetName,
            string CellAddress)
        {
            string CellValue = "";

            if (System.IO.File.Exists(FileName))
            {
                bool Proceed = false;

                Excel.Application xlApp = null;
                Excel.Workbooks xlWorkBooks = null;
                Excel.Workbook xlWorkBook = null;
                Excel.Worksheet xlWorkSheet = null;
                Excel.Sheets xlWorkSheets = null;
                Excel.Range xlCells = null;

                xlApp = new Excel.Application();
                xlApp.DisplayAlerts = false;
                xlWorkBooks = xlApp.Workbooks;
                xlWorkBook = xlWorkBooks.Open(FileName);

                xlApp.Visible = false;

                xlWorkSheets = xlWorkBook.Sheets;

                for (int x = 1; x <= xlWorkSheets.Count; x++)
                {
                    xlWorkSheet = (Excel.Worksheet)xlWorkSheets[x];

                    if (xlWorkSheet.Name == SheetName)
                    {
                        Proceed = true;
                        break;
                    }

                    System.Runtime.InteropServices
                        .Marshal.FinalReleaseComObject(xlWorkSheet);

                    xlWorkSheet = null;

                }

                if (Proceed)
                {
                    xlCells = xlWorkSheet.Range[CellAddress];

                    try
                    {
                        Console.WriteLine("Bold: {0}", xlCells.Font.Bold);   //  bool
                        Console.WriteLine("Italic: {0}", xlCells.Font.Italic); // bool
                        ForeColor = System.Drawing.ColorTranslator.FromOle((int)xlCells.Font.Color);
                        CellValue = Convert.ToString(xlCells.Value);
                    }
                    catch (Exception)
                    {
                        // Reduntant
                        CellValue = "";
                    }
                }
                else
                {
                    MessageBox.Show(SheetName + " not found.");
                }

                xlWorkBook.Close();
                xlApp.UserControl = true;
                xlApp.Quit();

                ReleaseComObject(xlCells);
                ReleaseComObject(xlWorkSheets);
                ReleaseComObject(xlWorkSheet);
                ReleaseComObject(xlWorkBook);
                ReleaseComObject(xlWorkBooks);
                ReleaseComObject(xlApp);
            }
            else
            {
                MessageBox.Show("'" + FileName +
                    "' not located. Try one of the write examples first.");
            }

            return CellValue;
        }

        public static void ReleaseComObject(object obj)
        {
            try
            {
                if (obj != null)
                {
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
                    obj = null;
                }
            }
            catch (Exception)
            {
                obj = null;
            }
        }
    }
}

表单代码，可以通过按钮工作并具有面板 var demoExcel = new ExcelCode（）; //在app文件夹中打开Excel文件，从Sheet1中的H2获取信息 textBox1.Text = demoExcel .GetCellValue（ Path.Combine（AppDomain.CurrentDomain.BaseDirectory，“Demo.xlsx”）， “工作表Sheet1” “H2”）;

        // Form has a panel, set back color to Sheet1.H2 color
        panel1.BackColor = demoExcel.ForeColor;
        // Translate the color to HTML
        var htmlColor = System.Drawing.ColorTranslator.ToHtml(demoExcel.ForeColor);
        Console.WriteLine(htmlColor.ToString());

在Excelgridview中显示和读取Excel文件

1 个答案: