我怎样才能防止在被检查的形式加载一个单选按钮？ [英] How can I prevent a RadioButton from being checked when the Form loads?

问题描述

似乎是一个Noobie的问题，但我似乎无法阻止我形成了从检查在单选按钮我的一个组合框

作为设计师表示，没有单选按钮检查那里。

下面是差不多所有这种简单的代码。没有要求一个单选按钮在这里或在表单设计器检查

问：有没有方法，以防止任何单选按钮被选中时的形式加载？

 公共ValueTypeSelector（）{ 
的InitializeComponent（）; 
 radioButton1.Checked = FALSE; 
 radioButton2.Checked = FALSE; 
 radioButton3.Checked = FALSE; 
 radioButton4.Checked = FALSE; 
 radioButton5.Checked = FALSE; 
 radioButton6.Checked = FALSE; 
 button1.Enabled = FALSE; 
 button1.Click + = clickEvent; 
 button2.Click + = clickEvent; 
 radioButton1.Click + = clickEvent; 
 radioButton2.Click + = clickEvent; 
 radioButton3.Click + = clickEvent; 
 radioButton4.Click + = clickEvent; 
 radioButton5.Click + = clickEvent; 
 radioButton6.Click + = clickEvent; 
} 
 
 OnShow中无效（对象发件人，EventArgs五）{
的foreach（单选弧度的控制）{
如果（rad.Checked）{
 Console.WriteLine（跆拳道？）; 
} 
} 
} 
 
无效clickEvent（对象发件人，EventArgs五）{
单选弧度=发件人为单选按钮; 
如果（弧度！= NULL）{
如果（rad.Checked）{
如果（RAD == radioButton1）{
数据类型= TableDataType.Boolean; //< =这是问题！火灾在表格LOAD 
}否则如果（RAD == radioButton2）{
数据类型= TableDataType.Character; 
}否则如果（RAD == radioButton3）{
数据类型= TableDataType.DateTime; 
}否则如果（RAD == radioButton4）{
数据类型= TableDataType.Decimal; 
}否则如果（RAD == radioButton5）{
数据类型= TableDataType.Integer; 
}否则如果（RAD == radioButton6）{
数据类型= TableDataType.String; 
}其他{
的回报; 
} 
 button1.Enabled = TRUE; 
} 
}否则如果（发件人==按钮1）{
的DialogResult = DialogResult.OK; 
关闭（）; 
}否则如果（发件人==按钮2）{
的DialogResult = DialogResult.Cancel; 
关闭（）; 
} 
} 
  

更新：问题当显示的形式是 radioButton1 被选中：

 如果（ RAD == radioButton1）{
数据类型= TableDataType.Boolean; //< =这是问题！火灾在表格LOAD 
}否则如果（RAD == radioButton2）{
  

解决方案

请确保您的单选按钮不是第一个tabIndex = 0的控制。使确定按钮的tabindex = 0，接着的单选按钮。

Seems like a Noobie question, but I can't seem to prevent my form from checking one of the Radio Buttons in my Group Box:

As shown in the designer, no Radio Buttons are checked there.

Below is just about all of the code for this simple form. Nothing calls for a Radio Buttons to be checked here or in the form's designer.

Q: Is there a way to prevent any Radio Button from being checked when the form loads?

public ValueTypeSelector() {
  InitializeComponent();
  radioButton1.Checked = false;
  radioButton2.Checked = false;
  radioButton3.Checked = false;
  radioButton4.Checked = false;
  radioButton5.Checked = false;
  radioButton6.Checked = false;
  button1.Enabled = false;
  button1.Click += clickEvent;
  button2.Click += clickEvent;
  radioButton1.Click += clickEvent;
  radioButton2.Click += clickEvent;
  radioButton3.Click += clickEvent;
  radioButton4.Click += clickEvent;
  radioButton5.Click += clickEvent;
  radioButton6.Click += clickEvent;
}

void OnShow(object sender, EventArgs e) {
  foreach (RadioButton rad in Controls) {
    if (rad.Checked) {
      Console.WriteLine("WTF?");
    }
  }
}

void clickEvent(object sender, EventArgs e) {
  RadioButton rad = sender as RadioButton;
  if (rad != null) {
    if (rad.Checked) {
      if (rad == radioButton1) {
        DataType = TableDataType.Boolean; // <= HERE IS THE PROBLEM! FIRES ON FORM LOAD
      } else if (rad == radioButton2) {
        DataType = TableDataType.Character;
      } else if (rad == radioButton3) {
        DataType = TableDataType.DateTime;
      } else if (rad == radioButton4) {
        DataType = TableDataType.Decimal;
      } else if (rad == radioButton5) {
        DataType = TableDataType.Integer;
      } else if (rad == radioButton6) {
        DataType = TableDataType.String;
      } else {
        return;
      }
      button1.Enabled = true;
    }
  } else if (sender == button1) {
    DialogResult = DialogResult.OK;
    Close();
  } else if (sender == button2) {
    DialogResult = DialogResult.Cancel;
    Close();
  }
}

UPDATE: The problem is that radioButton1 gets checked when the form is shown:

      if (rad == radioButton1) {
        DataType = TableDataType.Boolean; // <= HERE IS THE PROBLEM! FIRES ON FORM LOAD
      } else if (rad == radioButton2) {

解决方案

Make sure your radiobuttons are NOT the first tabindex = 0 controls. Make the OK button tabindex=0, followed by the radiobuttons.

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