技術標籤：c#unity

unity C# 將字串轉換為整數型別失敗（小白求指點）

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;

public class updating_data : MonoBehaviour
{

    private GameObject info_panel;
    private GameObject info_panel1;
    private GameObject info_panel2;
    private
 
 GameObject info_panel3;
    private GameObject info_panel4;
    private GameObject info_panel5;

    private int RingNum ;
    private string content;

    private string content2;
    private GameObject tunnel_self;

    // Start is called before the first frame update
    void Start()
    {
        info_panel =
 
 GameObject.Find("TunnelInfoPanel");
        tunnel_self = GameObject.Find(this.gameObject.name);
        content = this.gameObject.name;
        content2 = content.Substring(6, 4);
        RingNum = Convert.ToInt32(content2, 2);
    }
}```

最後一行的**RingNum = Convert.ToInt32(content2, 2);**
 
unity提示錯誤：
Assets\updating_data.cs(29,19): error CS0103: The name 'Convert' does not exist in the current context

小白剛剛開始上手unity，求各路大神指點。: D