Question

我在比较datagridviews方面遇到了问题。我需要比较2个datagridviews，如果值相同，请标记它们或做一些事情。（我从excel导入值）

我不能使用linq它很慢。

我试试这个，但似乎我无法让它起作用：

for (int currentRow = 0; currentRow < grv.Rows.Count; currentRow++)
{
   var rowToCompare = grv.Rows[currentRow]; // Get row to compare against other rows

   // Iterate through all rows 
   //
   foreach (var row in grv.Rows)
   {  
       if (rowToCompare.equals(row) continue; // If row is the same row being compared, skip.

       bool duplicateRow = true;

       // Compare the value of all cells
       //
       for (int cellIndex; cellIndex < row.Cells.Count; cellIndex++)
       {
          if (!rowToCompare.Cells[cellIndex].Value.equals(row.Cells[cellIndex].Value))
          {
             duplicateRow = false;
             break;
          }
       }

       if (duplicateRow)
       {
           grv.Rows.Remove(row);
       }
   }
}

Answer 1

试试这个：

private void button1_Click(object sender, EventArgs e)
{
    DataTable src1 = grv1.DataSource as DataTable;
    DataTable src2 = grv2.DataSource as DataTable;
    int index1 = 0;
    foreach (DataRow row1 in src1.Rows)
    {
        foreach (DataRow row2 in src2.Rows)
        {
            int index2 = 0;
            bool duplicateRow = true;
            for (int cellIndex = 0; cellIndex < row1.ItemArray.Count(); cellIndex++)
            {
                if (!row1.ItemArray[cellIndex].ToString().Equals(row2.ItemArray[cellIndex].ToString()))
                {
                    duplicateRow = false;
                    break;
                }
            }

            if (duplicateRow)
            {
                grv1.Rows[index1].DefaultCellStyle.BackColor = Color.Red;
                grv2.Rows[index2].DefaultCellStyle.BackColor = Color.Red;
            }
            index2++;
        }
        index1++;
    }
}

这应该用红色复制颜色。确保两个gridview具有相同的单元格编号。

Answer 2

private void button5_Click(object sender, EventArgs e)
    {
        DataTable src1 = dataGridView1.DataSource as DataTable;
        DataTable src2 = dataGridView2.DataSource as DataTable;
        for (int i = 0; i < src1.Rows.Count; i++)
        {
            var row1 = src1.Rows[i].ItemArray;
            var row2 = src2.Rows[i].ItemArray;

            for (int j = 0; j < row1.Length; j++)
            {
                if (!row1[j].ToString().Equals(row2[j].ToString()))
                {
                    dataGridView1.Rows[i].Cells[j].Style.BackColor = Color.Red;
                    dataGridView2.Rows[i].Cells[j].Style.BackColor = Color.Red;
                }
            }
        }

这将突出显示具有相同值的单元格。如果datagridviews都应具有相同的行数。

比较datagridview1和datagridview2并标记相同的值c＃

2 个答案: