如何閱讀特定的Excel列值的使用將它們放在字符串數組C＃2.0

Question

我有下面的代碼示例同我能讀懂我的Excel文件，其中：

private bool excelvalidate(string requestType, string filename) 
{ 
    Excel.Application ExcelObj = null; 
    ExcelObj = new Excel.Application(); 
    Excel.Range range = null; 
    Excel.Workbook theWorkbook = null; 
    Excel.Sheets sheets = null; 
    Excel.Worksheet worksheet = null; 

    bool strValResult = false; 
    string[] strArray = null; 
    if (ExcelObj != null) 
    { 
     theWorkbook = ExcelObj.Workbooks.Open("D:/Support/" + filename, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing); 
     sheets = theWorkbook.Worksheets; 
     worksheet = (Excel.Worksheet)sheets.get_Item(1); 
     for (int x = 1; x <= 1; x++) 
     { 
      range = worksheet.get_Range("A" + x.ToString(), "G" + x.ToString()); 
      System.Array myvalues = (System.Array)range.Cells.get_Value(null); 
      strArray = ConvertToStringArray(myvalues); 
     } 
     if (requestType == "CreateCityKeys" || requestType == "CreateCityShortKeys") 
     { 
      strValResult = CheckStringInArray("City Name", strArray); 
      if (strValResult == true) 
      { 
       //Here I want to call a function which will return all the column values in City Name something like below 
       string [] columnArray = ReadAllValuesFromColumn("City Name"); 
      } 
     } 
     else if (requestType == "CreateAirportKeys") 
     { 
      strValResult = CheckStringInArray("Full Airport Name", strArray); 
     } 
     else if (requestType == "CreateAirportShortKeys") 
     { 
      strValResult = CheckStringInArray("Airport Short Name", strArray); 
     } 
     ExcelObj.Workbooks.Close(); 
     ExcelObj.Quit(); 
     ExcelObj = null; 
     theWorkbook = null; 
     sheets = null; 
     range = null; 
     Marshal.ReleaseComObject(theWorkbook); 
    } 
    return strValResult; 
} 
private bool CheckStringInArray(string chkstr, string[] strArr) 
{ 
    bool exists = false; 
    foreach (string x in strArr) 
    { 
     if (x.Contains(chkstr)) 
     { 
      exists = true; 
     } 
    } 
    return exists; 
} 

private string[] ConvertToStringArray(System.Array values) 
{ 
    // create a new string array 
    string[] theArray = new string[values.Length]; 

    // loop through the 2-D System.Array and populate the 1-D String Array 
    for (int i = 1; i <= values.Length; i++) 
    { 
     if (values.GetValue(1, i) == null) 
      theArray[i - 1] = ""; 
     else 
      theArray[i - 1] = (string)values.GetValue(1, i).ToString(); 
    } 
    return theArray; 
} 

在上面的代碼中，你可以看到是，我想打電話給如下功能：

string [] columnArray = ReadAllValuesFromColumn("City Name"); 

請建議的邏輯寫上面的函數，如果我通過列標題名稱爲「城市名稱」

PLE閱讀所有的列值ase建議使用一些代碼片段。

謝謝

Answer 1

下面是我爲我的上述問題寫的解決方案，請爲任何更改建議。

private string ReadAllValuesFromColumn(string fieldname, string filename) 
    { 
     Excel.Application ExcelObj = null; 
     ExcelObj = new Excel.Application(); 
     Excel.Range cxRange = null; 
     Excel.Range range = null; 
     Excel.Workbook theWorkbook = null; 
     Excel.Sheets sheets = null; 
     Excel.Worksheet worksheet = null; 
     string[] strArray = null; 
     StringBuilder sbReturn = new StringBuilder(); 
     Dictionary<string, ArrayList> dicArray = new Dictionary<string, ArrayList>(); 
     ArrayList fullArray = new ArrayList(); 
     try 
     { 
      if (ExcelObj != null) 
      { 
       theWorkbook = ExcelObj.Workbooks.Open("D:/Support/" + filename, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing); 
       sheets = theWorkbook.Worksheets; 
       worksheet = (Excel.Worksheet)sheets.get_Item(1); 
       cxRange = worksheet.UsedRange; 
       string str; 
       long lRowCount = cxRange.Rows.Count; 
       long lColumnCount = cxRange.Columns.Count; 
       for (int x = 1; x <= 1; x++) 
       { 
        range = worksheet.get_Range("A" + x.ToString(), "G" + x.ToString()); 
        System.Array myvalues = (System.Array)range.Cells.get_Value(null); 
        strArray = ConvertToStringArray(myvalues); 
       } 
       int fiedIndex = Array.IndexOf(strArray, fieldname); 

       if (fiedIndex != -1) 
       { 
        for (int y = 2; y <= lRowCount; y++) 
        { 
         str = (string)(cxRange.Cells[y,fiedIndex+1] as Excel.Range).Value2; 
         if (!string.IsNullOrEmpty(str)) 
         { 
          fullArray.Add(str); 
         } 
        } 
       } 
       ExcelObj.Workbooks.Close(); 
       ExcelObj.Quit(); 
       ExcelObj = null; 
       theWorkbook = null; 
       sheets = null; 
       range = null; 
       cxRange=null; 
      } 
     } 
     catch (Exception ex) 
     { 
      throw ex; 
     } 
     return sbReturn.ToString(); 
    } 

謝謝。