C#WinForm验证复选框和错误,如果至少一个未选择 [英] C# WinForm Validate Checkbox and Error if at least one is unselected
问题描述
我似乎对验证我的用户控制有问题。
帮助将是真棒:)
如果我选中了至少一个复选框,我将通过循环处理所有复选框。
如果我没有选中复选框,表单将生成一个错误。 p>
如果只有一个复选框之前的foreach将是一个更容易的解决方案对我来说,但我有很多复选框在这个用户控件,不想列出他们所有.. ..
我认为有一些逻辑问题,甚至选择一个复选框,我仍然得到我的警告messagebox ...和我警告messagebox循环,导致它从来没有close ...
private void ValidateButton_Click(object sender,EventArgs e)
{
$ b b foreach(var control in this.Controls)
{
if(控件是CheckBox)
{
if((CheckBox)控件).Checked)
{
// CODE GOES HERE to
//进程在后台检入
//然后
validatebutton.hide();
nextbutton.show();
}
}
else
{
DialogResult uncheckederror = MessageBox.Show(您必须至少选择一个复选框,
验证错误! ,MessageBoxButtons.OK,MessageBoxIcon.Exclamation,MessageBoxDefaultButton.Button1);
}
}
}
检查以下内容:
private void ValidateButton_Click EventArgs e)
{
Boolean checkboxFlag = false;
foreach(var control in this.Controls)
{
if(control is CheckBox)
{
if(((CheckBox)control).checked)
{
checkboxFlag = true;
validatebutton.hide()
nextbutton.show();
}
}
}
if(!checkboxFlag)
{
DialogResult uncheckederror = MessageBox.Show必须至少选择一个复选框,
Validation Error!,MessageBoxButtons.OK,MessageBoxIcon.Exclamation,
MessageBoxDefaultButton.Button1);
}
}
I seem to have a problem with validating my user control.
Help would be awesome :)
If I have at least one check box checked, I will process through a loop all checkboxes.
If I have no checkboxes checked, the form generates an error.
An if with just one checkbox before the foreach would be an easier solution for me but I have quite a lot of checkboxes on this user control and dont want to list them all....
Also I think there is some logic problem, cos even select a checkbox I still get my warning messagebox... and I the warning messagebox loops causing it never to close...
private void ValidateButton_Click(object sender, EventArgs e)
{
foreach (var control in this.Controls)
{
if (control is CheckBox)
{
if (((CheckBox)control).Checked)
{
//CODE GOES HERE to
//Process checked in background
//and then
validatebutton.hide();
nextbutton.show();
}
}
else
{
DialogResult uncheckederror = MessageBox.Show("You must select at least one checkbox",
"Validation Error!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1);
}
}
}
Check the following:
private void ValidateButton_Click(object sender, EventArgs e)
{
Boolean checkboxFlag = false;
foreach (var control in this.Controls)
{
if (control is CheckBox)
{
if (((CheckBox) control).Checked)
{
checkboxFlag = true;
validatebutton.hide();
nextbutton.show();
}
}
}
if(!checkboxFlag)
{
DialogResult uncheckederror = MessageBox.Show("You must select at least one checkbox",
"Validation Error!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation,
MessageBoxDefaultButton.Button1);
}
}
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