vs2008

public short NewGroupLevel => this.m_newGroupLevel;
public string NewGroupName => this.m_newGroupName;
public string NewGroupPath => SharedUtils.ConvertIntArrayToString(this.m_newGroupPath);
public string NewGroupNamePath => this.m_newGroupNamePath;
public short CurrentGroupLevel => this.m_curGroupLevel;
public string CurrentGroupName => this.m_curGroupName;
public string CurrentGroupPath => SharedUtils.ConvertIntArrayToString(this.m_curGroupPath);
public string CurrentGroupNamePath => this.m_curGroupNamePath;
public bool IsDrillDown() => (int) this.NewGroupLevel >= (int) this.CurrentGroupLevel;
错误 2 应为 { 或 ;
要怎么改,vs2008不接受这个格式