错误位置1没有行

Question

I am getting an exception

System.ArgumentOutOfRangeException: There is no row at position 1. RBTree`1.GetNodeByIndex(Int32 userIndex)**

There is no row at position can be 0 or 1 or 2 . I guess i am trying to read or write some array elements which are outside of your array boundary. The code snippet is shown below

public void ManageAlarm(string textName, int leaveValue)
{
   try
   {
      int indices = team.Find(textName);
      if (indices >= 0)
      {
         DataRow row = teamTable.Rows[indices];
         row[m_leaveValues] = leaveValue;
      }
   }

What should i do here to prevent this alert trace

Answer 1

You need to check the rows count in m_tblAlert before you access rows in it. m_tblAlert.Rows.Count must be greater then indx

public void ManageDuplicateAlarm(string alertName, int dupValue)
{
   try
   {
      int indx = m_alerts.Find(alertName);
      if (indx >= 0 && m_tblAlert.Rows.Count > indx)
      {
         DataRow row = m_tblAlert.Rows[idx];
         m_dcDuplicates.ReadOnly = false;
         row[m_dcDuplicates] = dupValue;
         m_dcDuplicates.ReadOnly = true;
      }
   }

Edit more exlanation on OP comment

You are checking indx >= 0 to make sure that that -1 could not be row index for statement m_tblAlert.Rows[idx]; Similarly you need to check if the value return by m_alerts.Find(alertName) must be valid row number ie it should not be greater then the number of rows you have in data table.