通过excel公式字符串读取Excel单元格值

Question

My C#.Net application to load and read an excel sheet cell value by using an excel formula string .

For example - The excel sheet location and the tab name along with its Cell row/column will be provided as a formula string.

'D:\\DataX[Data.Xls]EOD'!$A5

From the above formula - C# application to Load the Data.Xls from the location and open the EOD tabsheet and should read 5th row A column value.

Looking for the best way to accomplish in C#.Net framework.

Answer 1

                string con = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + openFileDialog1.FileName + ";Extended Properties='Excel 8.0;HDR=Yes;READONLY=true;IMEX=1;'";
                using (var connection = new System.Data.OleDb.OleDbConnection(con))
                {
                    connection.Open();

                    xlApp = new Application();
                    xlWorkbook = xlApp.Workbooks.Open(openFileDialog1.FileName);

                    for (int ipage = 1; ipage <= xlApp.ActiveWorkbook.Sheets.Count; ipage++)
                    {
                        Worksheet page = xlApp.ActiveWorkbook.Sheets[ipage];
                        page.Columns.ClearFormats();
                        sayfa.Rows.ClearFormats();
                        var xlRange = page.UsedRange;
                        var lastRow = page.Cells.SpecialCells(XlCellType.xlCellTypeLastCell).Row;
                        int sum = xlRange.Rows.Count - 1;

                        var columns = new List<string>();
                        string ObjecType = "";

                        for (int i = 1; i < xlRange.Columns.Count + 1; i++)
                        {
                        
                        }
                    
                    }
                    
                    connection.Close();
                }