TableLayoutPanel 非常慢

Question

I am using TableLayoutPanel in C# (Forms). My table is pretty big with its 33 columns and 8 rows. All cells contain Label -objects.

I have already set DoubleBuffered = true; of my TableLayoutPanel by creating a new subclass:

public class DoubleBufferedTableLayoutPanel : TableLayoutPanel
{
    public DoubleBufferedTableLayoutPanel()
    {
        DoubleBuffered = true;
    }
}

If a user presses button X, all cell-controls are deleted and other labels are loaded into the table (from an array which contains all Label objects).

DEL: this.table.Controls.Remove(this.table.GetControlFromPosition(col, row));

ADD: this.table.Controls.Add(this.labelArray[row, (col+pos)], col, row);

Everything works fine, except that the progress of deleting the controls and adding the new ones takes five to ten seconds.

Is there a way other than to set DoubleBuffered = true in order to speed up this process?

Answer 1

Use this code to avoid the slow processing of events in C#

tableLayoutPanel1.Visible = false;
tableLayoutPanel1.Controls.Clear();
tableLayoutPanel1.SuspendLayout();

  // Processing Code

tableLayoutPanel1.ResumeLayout();
tableLayoutPanel1.Visible = true;

Answer 2

我可能错了，但这听起来像是针对这些任务优化的 datagridview 的工作。

Answer 3

Are you getting the Data from the database to populate the tablelayoutpanel everytime you perform an action (postback)?

If so, consider lazy loading the data in to a bindable object once when the page first loads. Then use the populated object when re binding (on Postback).

Answer 4

Try this code

TableLayoutPanel.GetType().GetProperty("DoubleBuffered",
                System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic)
                .SetValue(TableLayoutPanel, true, null);