私のコメントに加えて
範囲をループする場合、上から下ではなく、常に左から右にループします (範囲に 1 列しかない場合を除く)。
あなたのExcelシートがこのように見えるとしましょう
試行錯誤
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel;
Namespace WindowsFormsApplication4
{
public partial class Form1 : Form
{
Public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Microsoft.Office.Interop.Excel.Application xlexcel;
Microsoft.Office.Interop.Excel.Workbook xlWorkBook;
Microsoft.Office.Interop.Excel.Worksheet xlWorkSheet;
Microsoft.Office.Interop.Excel.Range xlRange;
object misValue = System.Reflection.Missing.Value;
xlexcel = new Excel.Application();
xlexcel.Visible = true;
// Open a File
xlWorkBook = xlexcel.Workbooks.Open("C:\\Book1.xlsx", 0, true, 5, "", "", true,
Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
// Set Sheet 1 as the sheet you want to work with
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
xlRange = xlWorkSheet.UsedRange;
for (int i = 1; i <= xlRange.Rows.Count; i++)
{
for (int j = 1; j <= xlRange.Columns.Count; j++)
{
if (xlexcel.WorksheetFunction.CountIf(xlRange.Cells[i, j], "0") > 0)
{
MessageBox.Show("Row " + i + " has 0");
break;
}
}
}
//Once done close and quit Excel
xlWorkBook.Close(false, misValue, misValue);
xlexcel.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlexcel);
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Unable to release the Object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
}
}
これはあなたが得るものです