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How to split form background color in C Sharp


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How to split form background color in C#.Net

This will change Windows form back color according to Button Click.

Controls Name

Button Red: btnRed

                Blue: btnBlue

                Split: btnSplit

                Reset: btnReset

Code

                bool check; //boolean variable to check whether split is clicked or not.

//function to split form background color

  private void fnSplit()

        {           

            Graphics surface = this.CreateGraphics();

surface.FillRectangle(new SolidBrush(Color.Red), 0, 0, (this.Width) / 2, this.Height);

//drawing filled rectangle of red color on form left half side with width equal to half of form

//width andheigth equalto the height of form.

surface.FillRectangle(new SolidBrush(Color.Blue), (this.Width) / 2, 0, (this.Width) / 2, this.Height);

//drawing another rectanfle of blue color on other hand of the form of same dimension as that of firstrectangle.

        }

 

//changing form background color to red on Red button click

        private void btnRed_Click(object sender, EventArgs e)

        {

            this.BackColor = Color.Red;

//setting background color to red.

            check = false;          

        }

//changing form background color to blue on Blue button click

        private void btnBlue_Click(object sender, EventArgs e)

        {

            this.BackColor = Color.Blue;

//setting background color to red.

            check = false;         

        }

 

//spliting form background color on Split button click

        private void btnSplit_Click(object sender, EventArgs e)

        {           

            fnSplit();

//Calling function to split form color.

            check = true;

//assigning true to check.

        }

 

        private void frmColor_SizeChanged(object sender, EventArgs e)

        {

            if(check)

                fnSplit();

//calling fnSplit() function is form background color is already split on form resize event.

        }

 

//this is reset the form bolor to its default color.

        private void btnReset_Click(object sender, EventArgs e)

        {          

            this.BackColor = DefaultBackColor;

            if (check)

            {

                this.Refresh();

                this.BackColor = DefaultBackColor;

            }

        }      


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