Windows形成应用程序datagridview背景颜色 [英] Windows forms application datagridview background color

问题描述

我在Form上的WinForms应用程序中有DataGridView。 Form有一个背景图片。

我想让我的网格透明化。但它只是通过改变BackgroundColor属性而无法工作。



我尝试过：



我尝试了下面的代码，但是给了我没有找到合适的方法来覆盖的错误

  protected  覆盖  void  PaintBackground（图形图形，矩形clipBounds，矩形gridBounds）
 {
  base  .PaintBackground（graphics，clipBounds，gridBounds）; 
 Rectangle rectSource =  new  Rectangle（ this  .Location.X， this  .Location.Y， this  .Width， this  .Height） ; 
 Rectangle rectDest =  new 矩形（ 0 ， 0 ，rectSource.Width，rectSource.Height）; 
 
位图b =  new 位图（Parent.ClientRectangle.Width，Parent.ClientRectangle.Height）; 
 Graphics.FromImage（b）.DrawImage（ this  .Parent.BackgroundImage，Parent.ClientRectangle）; 
 
 
 graphics.DrawImage（b，rectDest，rectSource，GraphicsUnit.Pixel）; 
 SetCellsTransparent（）; 
} 
 
 
  public   void  SetCellsTransparent（） 
 {
 此 .EnableHeadersVisualStyles =  false ; 
  this  .ColumnHeadersDefaultCellStyle.BackColor = Color.Transparent; 
  this  .RowHeadersDefaultCellStyle.BackColor = Color.Transparent; 
 
 
  foreach （DataGridViewColumn col  in   this  .Columns）
 {
 col.DefaultCellStyle.BackColor = Color.Transparent; 
 col.DefaultCellStyle.SelectionBackColor = Color.Transparent; 
} 
} 

有人可以帮忙吗？



谢谢。

解决方案

引用：

找不到合适的方法来覆盖

意味着什么呢说：你可以覆盖的基本控件中没有该名称的方法。



有一个DataGridView.PaintBackground方法：DataGridView.PaintBackground方法（图形，矩形，矩形）（System.Windows.Forms） ） [ ^ ]但除非从DataGridView派生控件，否则无法覆盖它 - 您无法覆盖表单代码中的嵌入式控件方法，只能在源自DataGridVi的控件的代码中EW。

Hi,

I have DataGridView in WinForms Application on my Form. Form has a background image.
I want to make my grid transparent too. But its not working by simply changing the BackgroundColor property.

What I have tried:

I tried below code, but gives me the error that "no suitable method found to override"

protected override void PaintBackground(Graphics graphics, Rectangle clipBounds, Rectangle gridBounds)
        {
            base.PaintBackground(graphics, clipBounds, gridBounds);
            Rectangle rectSource = new Rectangle(this.Location.X, this.Location.Y, this.Width, this.Height);
            Rectangle rectDest = new Rectangle(0, 0, rectSource.Width, rectSource.Height);

            Bitmap b = new Bitmap(Parent.ClientRectangle.Width, Parent.ClientRectangle.Height);
            Graphics.FromImage(b).DrawImage(this.Parent.BackgroundImage, Parent.ClientRectangle);


            graphics.DrawImage(b, rectDest, rectSource, GraphicsUnit.Pixel);
            SetCellsTransparent();
        }


        public void SetCellsTransparent()
        {
            this.EnableHeadersVisualStyles = false;
            this.ColumnHeadersDefaultCellStyle.BackColor = Color.Transparent;
            this.RowHeadersDefaultCellStyle.BackColor = Color.Transparent;


            foreach (DataGridViewColumn col in this.Columns)
            {
                col.DefaultCellStyle.BackColor = Color.Transparent;
                col.DefaultCellStyle.SelectionBackColor = Color.Transparent;
            }
        }

Can somebody help?

Thanks.

解决方案

Quote:

no suitable method found to override

Means exactly what it says: there is no method of that name in the base control that you can override.

There is a DataGridView.PaintBackground method: DataGridView.PaintBackground Method (Graphics, Rectangle, Rectangle) (System.Windows.Forms)[^] but unless you derive your control from DataGridView you cannot override it - you cannot override an embedded control method in your form code, only in code for a control which derives from DataGridView.

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