访问动态创建的面板上的动态创建的控件

Question

我正在创建这个面板

Label PrinterName = new Label();
                Label Format = new Label();
                Label Count = new Label();
                Label FormatLabel = new Label();
                Label PrintedLabel = new Label();
                Label ResourceLabel = new Label();
                Button Detailsbutton = new Button();
                Button PrintButton = new Button();
                PictureBox LabelImageBox = new PictureBox();
                Panel panel1 = new Panel();
                ComboBox PrinterComboBox = new ComboBox();
                PrinterName.Font = new System.Drawing.Font("Microsoft Sans Serif", 16F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
                PrinterName.Location = new System.Drawing.Point(11, 9);
                PrinterName.Name = "PrinterName";
                PrinterName.Size = new System.Drawing.Size(169, 28);
                PrinterName.TabIndex = 5;
                PrinterName.Text = printers[pc * 3];
                // 
                // Format
                // 
                Format.Font = new System.Drawing.Font("Microsoft Sans Serif", 16F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
                Format.Location = new System.Drawing.Point(195, 51);
                Format.Name = "Format" +pc.ToString();
                Format.Size = new System.Drawing.Size(169, 28);
                Format.TabIndex = 7;
                Format.Text = "Label Format";
                Count.Font = new System.Drawing.Font("Microsoft Sans Serif", 16F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
                Count.Location = new System.Drawing.Point(370, 51);
                Count.Name = "Count";
                Count.Size = new System.Drawing.Size(109, 28);
                Count.TabIndex = 8;
                Count.Text = "Count";
                // 
                // Detailsbutton
                // 
                Detailsbutton.Location = new System.Drawing.Point(485, 60);
                Detailsbutton.Name = "Detailsbutton";
                Detailsbutton.Size = new System.Drawing.Size(91, 45);
                Detailsbutton.TabIndex = 11;
                Detailsbutton.Text = "Datails";
                Detailsbutton.UseVisualStyleBackColor = true;
                // 
                // PrinterComboBox
                // 
                PrinterComboBox.Font = new System.Drawing.Font("Microsoft Sans Serif", 16F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
                PrinterComboBox.FormattingEnabled = true;
                PrinterComboBox.Location = new System.Drawing.Point(16, 66);
                PrinterComboBox.Name = "PrinterComboBox";
                PrinterComboBox.Size = new System.Drawing.Size(157, 33);
                PrinterComboBox.TabIndex = 10;
                PrinterComboBox.Items.AddRange(resourcenumbers());
                PrinterComboBox.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
                PrinterComboBox.AutoCompleteSource = AutoCompleteSource.ListItems;
                PrinterComboBox.SelectedIndexChanged += (s, e) => { selectedindexchanged(pc); };
                // 
                // PrintButton
                // 
                PrintButton.Location = new System.Drawing.Point(485, 9);
                PrintButton.Name = "PrintButton";
                PrintButton.Size = new System.Drawing.Size(91, 45);
                PrintButton.TabIndex = 9;
                PrintButton.Text = "Print";
                PrintButton.UseVisualStyleBackColor = true;
                // 
                // FormatLabel
                // 
                FormatLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 16F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
                FormatLabel.Location = new System.Drawing.Point(195, 23);
                FormatLabel.Name = "FormatLabel";
                FormatLabel.Size = new System.Drawing.Size(169, 28);
                FormatLabel.TabIndex = 12;
                FormatLabel.Text = "Format:";
                // 
                // PrintedLabel
                // 
                PrintedLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 16F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
                PrintedLabel.Location = new System.Drawing.Point(370, 23);
                PrintedLabel.Name = "PrintedLabel";
                PrintedLabel.Size = new System.Drawing.Size(109, 28);
                PrintedLabel.TabIndex = 13;
                PrintedLabel.Text = "Printed:";
                // 
                // ResourceLabel
                // 
                ResourceLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 16F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
                ResourceLabel.Location = new System.Drawing.Point(20, 37);
                ResourceLabel.Name = "ResourceLabel";
                ResourceLabel.Size = new System.Drawing.Size(169, 28);
                ResourceLabel.TabIndex = 14;
                ResourceLabel.Text = "Resoruce:";
                // 
                // LabelImageBox
                // 
                LabelImageBox.Location = new System.Drawing.Point(589, 8);
                LabelImageBox.Name = "LabelImageBox" + pc.ToString();
                LabelImageBox.Size = new System.Drawing.Size(206, 107);
                LabelImageBox.TabIndex = 15;
                LabelImageBox.TabStop = false;
                // 
                // panel1
                // 
                panel1.BackColor = System.Drawing.SystemColors.ActiveBorder;
                panel1.Controls.Add(LabelImageBox);
                panel1.Controls.Add(ResourceLabel);
                panel1.Controls.Add(PrintedLabel);
                panel1.Controls.Add(FormatLabel);
                panel1.Controls.Add(Detailsbutton);
                panel1.Controls.Add(PrinterComboBox);
                panel1.Controls.Add(PrintButton);
                panel1.Controls.Add(Format);
                panel1.Controls.Add(Count);
                panel1.Controls.Add(PrinterName);
                panel1.Location = new System.Drawing.Point(106, 91 + 150*pc);
                panel1.Name = "panel" + pc.ToString();
                panel1.Size = new System.Drawing.Size(815, 126);
                panel1.TabIndex = 9;
                this.Controls.Add(panel1);

创建面板后如何访问面板上的控件。这些面板不止一个，它们可以随时移除和重新绘制，这就是为什么需要动态创建它的原因。

我尝试过类似的方法，但我认为我还差得远。 p 是相关的面板编号。

this.Controls["panel" + p.ToString()].Controls["Format" + p.ToString()].Text = "the thing";

我还需要能够访问诸如组合框的选定索引之类的内容，例如

int index = this.Controls["panel" + p.ToString()].Controls["PrinterComboBox"].SelectedIndex;

Answer 1

您需要为每个子控件添加一个标识符或其他内容以引用该控件。您可以使用名称、设置标签等

下面是删除面板中动态创建的特定按钮的示例。

foreach (Control p in this.Controls)
If (p is Panel)
{ 
    foreach (Control PanelControl in p.Controls)
    If (PanelControl.Tag.Contains("RemoveThisButton"))
    { 
        PanelControl.Dispose();
    }
}

修改数组时要小心，因为这会破坏循环。

访问动态创建的面板上的动态创建的控件

Accessing dynamically created controls that are on a dynamically created panel

c#

controls

winforms