Range.Find - 类型不匹配。搜索长字符串时

Question

在 excel 的 C# VSTO 中，当我在非常长的字符串上使用 Find 方法时，我得到：

Type mismatch. (Exception from HRESULT: 0x80020005 (DISP_E_TYPEMISMATCH))

有什么想法吗？

Answer 1

在使用 Excel 和谷歌搜索后，我发现 Find 有 255 个字符的限制 - 您可以按 CTRL-F 并查看输入名额有限

我找不到该限制的 Microsoft 文档。所以这是 C# 中的解决方法扩展方法：

   public static Range FindLongStr(this Range rng, 
                                        string what,
                                        object after,
                                        object lookIn, 
                                        object lookAt, 
                                        object searchOrder, 
                                        XlSearchDirection searchDirection = XlSearchDirection.xlNext,
                                        object matchCase = null,
                                        object matchByte = null,
                                        object searchFormat = null){
       Range retVal;
       if (what.Length < 255)
       {
          retVal = rng.Find(what, after, lookIn, lookAt, searchOrder, searchDirection, matchCase, matchByte, searchFormat);
       }
       else
       {
          var whatSearch = what.Substring(0, 254) + "*";
          retVal = rng.Find(whatSearch, after, lookIn, lookAt, searchOrder, searchDirection, matchCase, matchByte, searchFormat);
          while (retVal != null && retVal.Cells.Value2 != what)
          {
             retVal = rng.Find(whatSearch, retVal, lookIn, lookAt, searchOrder, searchDirection, matchCase, matchByte, searchFormat);
          }
       }
       return retVal;
    }

Range.Find - 类型不匹配。搜索长字符串时

Range.Find - Type mismatch. when searching for long strings

vsto

excel-interop