c#列表框索引与计数

Question

我编写了一个程序，从目录中读取XML集合，但我的问题是，当我编写文本文件时，我做了一个测试，我发现了这个我把44 XML文件在列表框和计数是44，但索引是43。程序不能写入的最后一个文件!(

  private void button1_Click_1(object sender, EventArgs e)
    {


        int a = 0;
        int total = Convert.ToInt16(ListCount.Text) ;
        while ( a < total)
        {
            string path = Convert.ToString(listBox1.SelectedItem);
            XmlSerializer xs = new XmlSerializer(typeof(CAPTURE));
            FileStream read = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
            CAPTURE cap = (CAPTURE)xs.Deserialize(read);
            textBox1.Text = cap.LOAN_CONTROL;
            textBox2.Text = cap.LOAN_NUMBER;
            textBox3.Text = cap.CLNT_NAME;
            textBox4.Text = cap.SOCSEC_NUM;
            textBox5.Text = cap.DOC_TYPE;
            textBox6.Text = cap.DOC_DATE;
            if (textBox1.TextLength == 8 && textBox2.TextLength == 10 && textBox4.TextLength == 9 && textBox5.TextLength == 7 && textBox6.TextLength == 8)
            {
                string loan = Convert.ToString(int.Parse(textBox1.Text));
                string file_name = Global.General.path1 + "\success.txt";
                //string file_name = "C:\Users\Lesther\Desktop\test.txt";
                System.IO.StreamWriter objWriter;
                objWriter = new System.IO.StreamWriter(file_name, true);
                objWriter.Write(a + Environment.NewLine);
                objWriter.Write(DateTime.Now + Environment.NewLine);
                objWriter.Write(textBox1.Text + Environment.NewLine);
                objWriter.Write(textBox2.Text + Environment.NewLine);
                objWriter.Write(textBox3.Text + Environment.NewLine);
                objWriter.Write(textBox4.Text + Environment.NewLine);
                objWriter.Write(textBox5.Text + Environment.NewLine);
                objWriter.Write(textBox6.Text + Environment.NewLine);
                objWriter.Write("******************************************");
                objWriter.Write(Environment.NewLine);
                objWriter.Flush();
                objWriter.Close();

            }
            else
            {
                string file_name = Global.General.path1 + "\fail.txt";
                //string file_name = "C:\Users\Lesther\Desktop\Fail.txt";
                System.IO.StreamWriter objWriter;
                objWriter = new System.IO.StreamWriter(file_name,true);
                if (textBox1.TextLength < 8)
                {
                    string loan_number = "    Error en el Numero de Prestamo";
                    objWriter.Write(textBox1.Text + loan_number + Environment.NewLine);
                }
                else
                {
                    objWriter.Write(textBox1.Text + Environment.NewLine);
                }
                if (textBox2.TextLength < 10)
                {
                    string loan_control = "    Error en el Numero Control";
                    objWriter.Write(textBox2.Text + loan_control + Environment.NewLine);
                }
                else
                {
                    objWriter.Write(textBox2.Text + Environment.NewLine);
                    objWriter.Write(textBox3.Text + Environment.NewLine);
                }
                if (textBox4.TextLength < 9)
                {
                    string socsec_num = "    Error en el Seguro Social";
                    objWriter.Write(textBox4.Text + socsec_num + Environment.NewLine);
                }
                else
                {
                    objWriter.Write(textBox4.Text + Environment.NewLine);
                }
                if (textBox5.TextLength < 7)
                {
                    string doc_type = "    Error con el Doc Type";
                    objWriter.Write(textBox5.Text + doc_type + Environment.NewLine);
                }
                else
                {
                    objWriter.Write(textBox5.Text + Environment.NewLine);
                }
                if (textBox6.TextLength < 8)
                {
                    string doc_date = "    Error con el Doc Date";
                    objWriter.Write(textBox6.Text + doc_date + Environment.NewLine);
                }
                else
                {
                    objWriter.Write(textBox6.Text + Environment.NewLine);
                }
                objWriter.Write("******************************************");
                objWriter.Write(Environment.NewLine);
                objWriter.Flush();
                objWriter.Close();

            }

            if (a < total)
            {
                a++;
                listBox1.SelectedIndex++;
            }
            else
            {
                listBox1.Items.Clear();
                button1.Enabled = false;
                textBox1.Clear();
                textBox2.Clear();
                textBox3.Clear();
                textBox4.Clear();
                textBox5.Clear();
                textBox6.Clear();
                ListCount.Text = null;
                this.Refresh();
            }
        }
    }

Answer 1

您的列表框。selecteindex最可能从1开始。

不需要移动selectedIndex，只需使用items集合来获取特定的项。

string path = Convert.ToString(listBox1.items[a]);