Question

我动态创建了复选框。我有一个选项“全选”。如何在C＃中选择所有动态创建的复选框？

如何选择已创建的所有动态复选框？

protected void chkbox_CheckedChanged(object sender, EventArgs e)
{
    CheckBox chkBtn = new CheckBox();
    chkBtn = sender as CheckBox;
    selectedTypeId.Add(Convert.ToInt16(chkBtn.Name));
    foreach(int id in selectedTypeId)
    {
        Console.WriteLine(id);       
    }
}

Answer 1

声明一个全局CheckBoxes列表：

sp_configure 'clr enabled', 1
RECONFIGURE WITH OVERRIDE
-- Drop des fonctions pré-existantes
IF EXISTS (SELECT 1 FROM sys.objects WHERE object_id = OBJECT_ID(N'dbo.RegExMatches')) DROP FUNCTION dbo.RegExMatches
GO
IF EXISTS (SELECT 1 FROM sys.objects WHERE object_id = OBJECT_ID(N'dbo.RegExNbMatches')) DROP FUNCTION dbo.RegExNbMatches
GO
IF EXISTS (SELECT 1 FROM sys.objects WHERE object_id = OBJECT_ID(N'dbo.RegExMatchesSplit')) DROP FUNCTION dbo.RegExMatchesSplit
GO
IF EXISTS (SELECT 1 FROM sys.objects WHERE object_id = OBJECT_ID(N'dbo.RegExIsMatch')) DROP FUNCTION dbo.RegExIsMatch
GO
IF EXISTS (SELECT 1 FROM sys.objects WHERE object_id = OBJECT_ID(N'dbo.RegExMatch')) DROP FUNCTION dbo.RegExMatch
GO
-- Drop de l'assembly pré-existante puis recréation de celle-ci
IF EXISTS ( SELECT 1 FROM sys.assemblies asms WHERE asms.name = N'RegExFunction' ) DROP ASSEMBLY [RegExFunction]
CREATE ASSEMBLY RegExFunction FROM 'C:\CLR\Regex\RegularExpressionFunctions.dll' WITH PERMISSION_SET = SAFE
GO
-- Création des fonctions
CREATE FUNCTION dbo.RegExMatches(@pattern NVARCHAR(MAX), @sentence NVARCHAR(MAX), @separator NVARCHAR(MAX)) RETURNS NVARCHAR(MAX)
AS EXTERNAL NAME RegExFunction.[XXX.DotNet.XXX.RegularExpressionFunctions].RegExMatches
GO
CREATE FUNCTION dbo.RegExNbMatches(@pattern NVARCHAR(MAX), @sentence NVARCHAR(MAX)) RETURNS INT
AS EXTERNAL NAME RegExFunction.[XXX.DotNet.XXX.RegularExpressionFunctions].RegExNbMatches
GO
--CREATE FUNCTION dbo.RegExMatchesSplit(@pattern NVARCHAR(MAX), @sentence NVARCHAR(MAX)) RETURNS TABLE (Sujet NVARCHAR(MAX), Match NVARCHAR(MAX))
CREATE FUNCTION dbo.RegExMatchesSplit(@pattern NVARCHAR(MAX), @sentence NVARCHAR(MAX)) RETURNS TABLE (Match NVARCHAR(MAX))
AS EXTERNAL NAME RegExFunction.[XXX.DotNet.XXX.RegularExpressionFunctions].RegExMatchesSplit
GO
CREATE FUNCTION dbo.RegExIsMatch(@pattern NVARCHAR(MAX), @sentence NVARCHAR(MAX)) RETURNS BIT
AS EXTERNAL NAME RegExFunction.[XXX.DotNet.XXX.RegularExpressionFunctions].RegExIsMatch
GO
CREATE FUNCTION dbo.RegExMatch(@pattern NVARCHAR(MAX), @sentence NVARCHAR(MAX)) RETURNS NVARCHAR(MAX)
AS EXTERNAL NAME RegExFunction.[XXX.DotNet.XXX.RegularExpressionFunctions].RegExMatch
GO

在您的程序中开始实例化它。

DECLARE @sentence NVARCHAR(MAX)
DECLARE @regex NVARCHAR(MAX)
DECLARE @regex2 NVARCHAR(MAX)
DECLARE @separator NVARCHAR(MAX)
SET @sentence = 'ABABCCADSQDJIOAZF JAIPZDJKL MNJKCXNjnaze iodjazpdjadpazdoa zdjio'
SET @regex = '[A-z]{6}\ '
SET @regex2 = '^[^a-z]*ABC[^a-z]*$'
SET @separator = ';'
SELECT @regex as 'Regex', @sentence as 'Sentence', dbo.RegExMatch(@regex2, match) FROM dbo.RegExMatchesSplit(@regex, @sentence);
SELECT @regex as 'Regex', @sentence as 'Sentence', dbo.RegExMatches(@regex2, dbo.RegExMatches(@regex, @sentence, @separator), @separator)
SELECT @regex as 'Regex', @sentence as 'Sentence', dbo.RegExNbMatches(@regex,@sentence)
SELECT @regex as 'Regex', @sentence as 'Sentence', dbo.RegExIsMatch(@regex,@sentence)
SELECT @regex as 'Regex', @sentence as 'Sentence', dbo.RegExMatch(@regex2, dbo.RegExMatch(@regex,@sentence))
GO

每次动态添加CheckBox时，也要将其添加到List。

List<CheckBox> boxes;

如果要一次检查所有内容，请使用循环查看列表。

boxes = new List<CheckBox>();

Answer 2

您可以像这样获取控件的所有CheckBox：

var checkBoxes = this.Controls.OfType<CheckBox>();
checkBoxes.ToList()?.ForEach(x=>x.Checked = true);

但通常你会将所有复选框放在groupbox中（从ux角度来看）

groupBox.Controls.Add(checkBox);

然后从组框中获取它们：

var checkBoxes =  groupBox.Controls.OfType<CheckBox>();

如何在C＃中访问动态创建的控件？

2 个答案: