Question

在Windows形式c＃datagridvew中，我将其设置为销售发票形式的默认值。我将数量的默认值设置为1，但是如果要更改它，则不能；当我在editend之后单击时，所有行再次变为1：

//Only for Default Value
private void dgvitemDetail_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
{
    foreach (DataGridViewRow row in this.dgvitemDetail.Rows)
    {
        if (row.IsNewRow) break;
        row.Cells[5].Value = "1";
    }
}

Answer 1

您不希望“休息”；您想要“继续；”

“继续”告诉代码跳过所有内容并转到列表中的下一项。 “中断”告诉switch语句这是本节代码的结尾。

几个例子：

for (var animal in animals)
{
  if (animal == "cat") continue;

  Console.WriteLine("Is not a cat!");
}

还有一个switch语句：

switch (animal)
{
    case "cat":
      Console.WriteLine("I'm a cat!!");
      break;
    default:
      Console.WriteLine("I wish I was a cat!");
      break;
}

我想你想要

void dgvitemDetail_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
{ 
    foreach (DataGridViewRow row in this.dgvitemDetail.Rows) 
    { 
        if (row.IsNewRow) continue;

        row.Cells[5].Value = "1";
    }
}

甚至更好：

void dgvitemDetail_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
{ 
    foreach (DataGridViewRow row in this.dgvitemDetail.Rows) 
    { 
        // 0 = if it's a new row and 1 = a preexisting row
        row.Cells[5].Value = row.IsNewRow ? 0 : 1;
    }
}

需要帮助以获取C＃datagrid视图中“数量”列的默认值，并且该值可以更改

1 个答案: