我在表单上有一些标签，其目的是保存来自另一个表单的用户输入的值，因此，我需要以编程方式设置标签文本，而不是使用属性窗口。我已经这样做了，但问题是数据似乎没有传递给其他形式。我尝试运行调试，但解决方案锁定了我，我必须从任务管理器中将其关闭。我在打开第二个表单的方法上设置了一个断点。我的想法是，当程序逐步执行该方法时，我可以查看属性是否填充了正确的信息。不幸的是，它没有逐步执行该方法，而是打开了表单并锁定了
我希望也许有人可以看看我的代码并告诉我哪里出错了。
用户输入所有数据后，他/她单击一个按钮，将其保存到数据库并显示一条消息，要求用户单击另一个按钮以转到另一个表单。这部分工作正常。这是该操作的事件处理程序代码：
private void btnEnterNutritionInfo_Click(object sender, EventArgs e)
{
//call methods from NutritionBOL class to input calculated
//data into textboxes
this.txtRMR.Text = Convert.ToString(busObject.GetRMRdata(
busObject.BodyWeight));
this.txtDailyActivityBurn.Text = Convert.ToString(
busObject.GetDailyActivityBurnData(
busObject.RestingMetabolicRate));
this.txtEnergyAmount.Text = Convert.ToString(
busObject.GetEnergyAmount(
busObject.RestingMetabolicRate, busObject.DailyActivityBurn));
this.txtYourNutritionLevel.Text = busObject.GetNutritionLevel(
busObject.DailyEnergyAmount);
//convert text box data and assign to variables
busObject.BodyFatStart = double.Parse(this.txtBodyFatStart.Text);
busObject.BodyFatEndOfPhase1 = double.Parse(this.txtBodyFatEndOfPhase1.Text);
busObject.BodyFatEndOfPhase2 = double.Parse(this.txtbodyFatEndOfPhase2.Text);
busObject.BodyFatEndOfPhase3 = double.Parse(this.txtbodyFatEndOfPhase3.Text);
busObject.BodyWeight = double.Parse(this.txtBodyWeight.Text);
busObject.RestingMetabolicRate = double.Parse(this.txtRMR.Text);
busObject.DailyActivityBurn = double.Parse(this.txtDailyActivityBurn.Text);
busObject.DailyEnergyAmount = double.Parse(this.txtEnergyAmount.Text);
busObject.BodyFatStartNotes = this.txtStartNotes.Text;
busObject.BodyFatEndOfPhase1Notes = this.txtBodyFatEndOfPhase1Notes.Text;
busObject.BodyFatEndOfPhase2Notes = this.txtBodyFatEndOfPhase2Notes.Text;
busObject.BodyFatEndOfPhase3Notes = this.txtBodyFatEndOfPhase3Notes.Text;
busObject.NutritionLevel = this.txtYourNutritionLevel.Text;
//call method to save input data
busObject.SaveData();
//set visibility to true
txtRMR.Visible = true;
txtDailyActivityBurn.Visible = true;
txtEnergyAmount.Visible = true;
txtYourNutritionLevel.Visible = true;
lblYourNutritionLevel.Visible = true;
}
完成后，用户单击按钮转到另一个表单。此时，标签数据应该被传递给另一个表单。另一个表单打开，但标签数据未填写：这是该按钮单击的事件处理程序：
private void btnMeasurementData_Click(object sender, EventArgs e)
{
//assign text boxes to properties
this.BodyFatB4 = this.txtBodyFatStart.Text;
this.BodyWeightB4 = this.txtBodyWeight.Text;
this.BodyFatAfter = this.txtBodyFatEndOfPhase1.Text;
this.BodyWeightAfter = this.txtBodyWeight.Text;
//instantiate an object from the MeasurementsBOL to pass data
MeasurementsForm measurementsForm = new MeasurementsForm();
measurementsForm.BodyFatB4 = this.BodyFatB4;
measurementsForm.BodyWeightB4 = this.BodyWeightB4;
measurementsForm.BodyFatAfter = this.BodyFatAfter;
measurementsForm.BodyWeightAfter = this.BodyWeightAfter;
//StartDate data is just being passed through to the
//MeasurementsForm from the FitnessTest form
measurementsForm.StartDate = this.StartDate;
this.Hide();
//method call to open MeasurementsForm
busObject.GoToMeasurementsForm(this.StartDate, this.BodyFatB4,
this.BodyWeightB4, this.BodyFatAfter, this.BodyWeightAfter);
}
以下是打开 MeasurementsForm 的方法调用代码：
public void GoToMeasurementsForm(string startDate, string bodyFatB4,
string bodyWeightB4, string bodyFatAfter, string bodyWeightAfter)
{
MeasurementsForm f2;
//logic to decide what to do if an instance is not already instanitated
if (Application.OpenForms["MeasurementsForm"] == null)
{
f2 = new MeasurementsForm();
f2.StartDate = startDate;
f2.BodyFatB4 = bodyFatB4;
f2.BodyWeightB4 = bodyWeightB4;
f2.BodyFatAfter = bodyFatAfter;
f2.BodyWeightAfter = bodyWeightAfter;
f2.Name = "MeasurementsForm";
}
//logic to decide what to do if an instance is not already instantiated
else
{
f2 = Application.OpenForms["MeasurementsForm"] as MeasurementsForm;
f2.StartDate = startDate;
f2.BodyFatB4 = bodyFatB4;
f2.BodyWeightB4 = bodyWeightB4;
f2.BodyFatAfter = bodyFatAfter;
f2.BodyWeightAfter = bodyWeightAfter;
}
f2.Show();
}
这是单击按钮时打开的表单的代码：
public partial class MeasurementsForm : Form
{
//declare variables
string bodyFatB4 = "",
bodyWeightB4 = "",
bodyFatAfter = "",
bodyWeightAfter = "",
startDate = "";
//instantiate object from MeasurementsBOL class
MeasurementsBOL busObject = new MeasurementsBOL();
//default constructor
public MeasurementsForm()
{
InitializeComponent();
busObject.InitializeConnection();
}
//properties for variables
public string BodyFatB4
{
get { return bodyFatB4; }
set { bodyFatB4 = value; }
}
public string BodyWeightB4
{
get { return bodyWeightB4; }
set { bodyWeightB4 = value; }
}
public string BodyFatAfter
{
get { return bodyFatAfter; }
set { bodyFatAfter = value; }
}
public string BodyWeightAfter
{
get { return bodyWeightAfter; }
set { bodyWeightAfter = value; }
}
public string StartDate
{
get { return startDate; }
set { startDate = value; }
}
private void Form1_Load(object sender, System.EventArgs e)
{
//pass text data from nutrition form to labels
this.lblBodyFatB4FromNutrition.Text = this.BodyFatB4;
this.lblWeightB4FromNutrition.Text = this.BodyWeightB4;
this.lblBodyFatAfterFromNutrition.Text = this.BodyFatAfter;
this.lblWeightAfterFromNutrition.Text = this.BodyWeightAfter;
}
//event handler for B4 input data
private void btnEnterMeasurementsB4_Click(object sender, EventArgs e)
{
//convert input data and assign to variables
busObject.BodyFatB4 = double.Parse(lblBodyFatB4FromNutrition.Text);
busObject.BodyWeightB4 = double.Parse(lblWeightB4FromNutrition.Text);
busObject.ChestMeasurementB4 = double.Parse(txtChestB4.Text);
busObject.WaistMeasurementB4 = double.Parse(txtWaistB4.Text);
busObject.HipsMeasurementB4 = double.Parse(txtHipsB4.Text);
busObject.RightThighB4 = double.Parse(txtRightThighB4.Text);
busObject.LeftThighB4 = double.Parse(txtLeftThighB4.Text);
busObject.RightArmB4 = double.Parse(txtRightArmB4.Text);
busObject.LeftArmB4 = double.Parse(txtLeftArmB4.Text);
//call method to save input data
busObject.SaveB4Data();
//clear text boxes of data
this.txtChestB4.Clear();
this.txtWaistB4.Clear();
this.txtHipsB4.Clear();
this.txtRightThighB4.Clear();
this.txtLeftThighB4.Clear();
this.txtRightArmB4.Clear();
this.txtLeftArmB4.Clear();
//close form
this.Close();
}
//event handler for after input data
private void btnEnterMeasurementsAfter_Click(object sender, EventArgs e)
{
//convert input data and assign to variables
busObject.BodyFatAfter = double.Parse(lblBodyFatAfterFromNutrition.Text);
busObject.BodyWeightAfter = double.Parse(lblWeightAfterFromNutrition.Text);
busObject.ChestMeasurementAfter = double.Parse(txtChestAfter.Text);
busObject.WaistMeasurementAfter = double.Parse(txtWaistAfter.Text);
busObject.HipMeasurementAfter = double.Parse(txtHipsAfter.Text);
busObject.RightThighAfter = double.Parse(txtRightThighAfter.Text);
busObject.LeftThighAfter = double.Parse(txtLeftThighAfter.Text);
busObject.RightArmAfter = double.Parse(txtRightArmAfter.Text);
busObject.LeftArmAfter = double.Parse(txtLeftArmAfter.Text);
//call method to save input data
busObject.SaveAfterData();
//clear text boxes of data
this.txtChestAfter.Clear();
this.txtWaistAfter.Clear();
this.txtHipsAfter.Clear();
this.txtRightThighAfter.Clear();
this.txtLeftThighAfter.Clear();
this.txtRightArmAfter.Clear();
this.txtLeftArmAfter.Clear();
//close form
this.Close();
}
//event handler to open schedule form and hide this form
private void btnClickForSchedule_Click(object sender, EventArgs e)
{
this.Hide();
busObject.BackToMainSchedule(this.StartDate);
}
}