Question

我想出了我的百分比，计算的东西。现在我需要在计算后显示一条消息，表明租车类型，天数和租金总额。

//这些是我的单选按钮

private void rdoVehicle_CheckedChanged(object sender, EventArgs e) 
{
   string rdoName = ((RadioButton)sender).Name;   //name of selected radio button
   switch (rdoName) 
   {
       case "rdoEconomy": vehicleCost = ECONOMY; break;
       case "rdoLuxury": vehicleCost = LUXURY; break;
       case "rdoVan" : vehicleCost = VAN; break;
       case "rdoTruck": vehicleCost = TRUCK; break;
       case "rdoSuv": vehicleCost = SUV; break;
   }//end switch
}

txtDays，是我租用天数的txt属性和lblRentalTotal是我的出租总额的输出标签。

MessageBox.Show（?????????????????）

Answer 1

如果所有单选按钮都连接到同一事件，则会触发2个事件：

取消选中一个单选按钮时会触发。
选中新单选按钮时，另一个会激活。

检查事件处理程序中选中的单选按钮：

private void rdoVehicle_CheckedChanged(object sender, EventArgs e) 
{ 
    var rad = ((RadioButton)sender);
    if(!rad.Checked)
        return; 

    switch (rad.Name) 
    {
        case "rdoEconomy": vehicleCost = ECONOMY; break;
        case "rdoLuxury": vehicleCost = LUXURY; break;
        case "rdoVan" : vehicleCost = VAN; break;
        case "rdoTruck": vehicleCost = TRUCK; break;
        case "rdoSuv": vehicleCost = SUV; break;
    }
}

如何将输出中的信息拉入MessageBox

1 个答案: