Private Function isDuplicateField(ByRef existMetaItems As CMetas(), ByVal currentFieldChName As String, ByVal currentVal As String) Dim isExist As Boolean = False For Each metaItem As CMetas In existMetaItems If metaItem Is Nothing Then Continue For End If If metaItem.MetaType = currentFieldChName Then If (Not String.IsNullOrEmpty(currentVal)) And String.IsNullOrEmpty(metaItem.MetaValue) Then metaItem.MetaValue = currentVal End If isExist = True Exit For End If Next Return isExist End Function 转换c#代码

以下是 C# 版本的代码：

private bool IsDuplicateField(ref CMetas[] existMetaItems, string currentFieldChName, string currentVal)
{
    bool isExist = false;
    foreach (CMetas metaItem in existMetaItems)
    {
        if (metaItem == null)
        {
            continue;
        }
        if (metaItem.MetaType == currentFieldChName)
        {
            if (!string.IsNullOrEmpty(currentVal) && string.IsNullOrEmpty(metaItem.MetaValue))
            {
                metaItem.MetaValue = currentVal;
            }
            isExist = true;
            break;
        }
    }
    return isExist;
}

注意到 C# 中的数组参数需要带上方括号，即 `CMetas[]`。另外，C# 中的字符串类型是 `string` 而不是 `String`，但在实际使用时两者是等价的。