類型 'System.ArgumentOutOfRangeException' 未處理的異常在mscorlib.dll中發生的datagridview

Question

我得到這個錯誤：

An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll

Additional information: Index was out of range. Must be non-negative and less than the size of the collection.

這裏是我的代碼：

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 
using System.Windows.Forms; 

namespace karamouzi 
{ 
    public partial class importexcel : Form 
    { 
     db db1 = new db(); 
     public importexcel() 
     { 
      InitializeComponent(); 
     } 

     private void importexcel_Load(object sender, EventArgs e) 
     { 

     } 

     private void button1_Click(object sender, EventArgs e) 
     { 
      openFileDialog1.Filter = "Excel file(.xls)|*.xls"; 
      openFileDialog1.FilterIndex = 1; 

      bool userClickedOK =Convert.ToBoolean(openFileDialog1.ShowDialog()); 
      if (userClickedOK == true) 
      { 
       url.Text = openFileDialog1.FileName; 
       dataGridView1.DataSource = db1.GetDataFromExcel(url.Text); 
      } 
     } 

     private void button2_Click(object sender, EventArgs e) 
     { 
      for (int counter = 1; counter < dataGridView1.Rows.Count; counter++) 
      { 
       //if (dataGridView1.Rows[counter].Cells[1].Value != null) 
       //{ 
        // if (dataGridView1.Rows[counter].Cells[1].Value.ToString().Length != 0) 
        //{ 

error Line

db1.command("insert into tblStInfo(xStCode,xFname,xLname,xMajor,xStTell,xMeliCode) values('" + dataGridView1.Rows[counter].Cells[1].Value.ToString() + "','" + dataGridView1.Rows[counter].Cells[2].Value.ToString() + "','" + dataGridView1.Rows[counter].Cells[3].Value.ToString() + "','" + dataGridView1.Rows[counter].Cells[4].Value.ToString() +"','"+dataGridView1.Rows[counter].Cells[5].Value.ToString()+"','"+dataGridView1.Rows[counter].Cells[6].Value.ToString() +"')"); 

         //} 
        //} 
       } 
       MessageBox.Show("اطلاعات با موفقیت ثبت شد"); 
      } 

      private void btnExite_Click(object sender, EventArgs e) 
      { 
       Close(); 
      } 
     } 
    } 

Answer 1

FilterIndex是基於零的。

用此代替;

openFileDialog1.FilterIndex = 0;