Question

运行以下代码时，我得到运行时异常fix:Index超出了数组的范围：

  char[] delim = { ' ' };
  string sContent = txtcontent.Text;
  string sFind = txtfind.Text;
  string sReplace = txtreplace.Text;
  string sRecontent = txtrepalcecontent.Text;
  //Session["find"] = sFind;
  string[] fileLineString = new string[sContent.Length];
  for (int i =0 ; i < sContent.Length; i++)

   {
      //fileLineString[0] = sContent[0].ToString();
      string[] content = sContent.Split(delim);
      if (sFind == content[i])  ////**error**
          //if (Session["find"].ToString() == content[i])
      {
          string A = sContent.Remove(i, txtfind.Text.Length);
          string S = A.Insert(i, sReplace);
          txtrepalcecontent.Text = S;
      }

Answer 1

问题在于：

string[] content = sContent.Split(delim);
  if (sFind == content[i])  ////**error**

你正在迭代一个长度为nm的数组，m是另一个数组的长度（更短，因为数组是拆分的结果，所以你要删除字符并减少长度），但仍然期待数组长度为n。这是你让索引超出界限的方式。要修复它，只需在for-cycle之前移动拆分并使用相同的索引进行迭代：

char[] delim = { ' ' };
string sContent = txtcontent.Text;
string sFind = txtfind.Text;
string sReplace = txtreplace.Text;
string sRecontent = txtrepalcecontent.Text;
//Session["find"] = sFind;
string[] content = sContent.Split(delim);
string[] fileLineString = new string[content.Length];
for (int i =0 ; i < content.Length; i++)
{
  //fileLineString[0] = sContent[0].ToString();

  if (sFind == content[i])  ////**error**
      //if (Session["find"].ToString() == content[i])
  {
      string A = sContent.Remove(i, txtfind.Text.Length);
      string S = A.Insert(i, sReplace);
      txtrepalcecontent.Text = S;
  }

Answer 2

  string A = sContent.Remove(i, txtfind.Text.Length);
  string S = A.Insert(i, sReplace);
  txtrepalcecontent.Text = S;

如何在没有替换功能的情况下进行替换

修复：索引超出了数组的范围

2 个答案: