C# 如何处理：参数超出范围？

当我在picturebox中加载图片时，如果不先单击picturebox，图片会中断。 当我将返回放回代码中时，它将进入一个无止境的循环，当我删除它时，代码将中断

这是代码。它总是在第一点断裂，我不知道如何处理它

private void buttonNoiseAvr_Click(object sender, EventArgs e)
{
    Point Zeko = new Point(25, 25);

    if (pictureBoxSourcePicture.Image == null)
    {
        MessageBox.Show("No picture loaded");
        return;
    }

    if (pictureBoxSourcePicture.Height != clickedY || pictureBoxSourcePicture.Width != clickedX)
    {
        MessageBox.Show("Adeekll");
        //return;
    }

    Color oPoint = ((Bitmap)pictureBoxSourcePicture.Image).GetPixel(clickedX, clickedY);

    Color point1 = ((Bitmap)pictureBoxSourcePicture.Image).GetPixel(clickedX - 1, clickedY - 1);
    Color point2 = ((Bitmap)pictureBoxSourcePicture.Image).GetPixel(clickedX, clickedY - 1);
    Color point3 = ((Bitmap)pictureBoxSourcePicture.Image).GetPixel(clickedX + 1, clickedY - 1);
    Color point4 = ((Bitmap)pictureBoxSourcePicture.Image).GetPixel(clickedX - 1, clickedY + 1);
    Color point5 = ((Bitmap)pictureBoxSourcePicture.Image).GetPixel(clickedX, clickedY + 1);
    Color point6 = ((Bitmap)pictureBoxSourcePicture.Image).GetPixel(clickedX + 1, clickedY + 1);
    Color point7 = ((Bitmap)pictureBoxSourcePicture.Image).GetPixel(clickedX - 1, clickedY);
    Color point8 = ((Bitmap)pictureBoxSourcePicture.Image).GetPixel(clickedX + 1, clickedY);


    //int[] XOR = new int[] { oPoint.R };
    //int[] XOG = new int[] { oPoint.G };
    //int[] XOB = new int[] { oPoint.B };

    int[] XR = new int[] { point1.R, point2.R, point3.R, point4.R, point5.R, point6.R, point7.R, point8.R };
    int[] XG = new int[] { point1.G, point2.G, point3.G, point4.G, point5.G, point6.G, point7.G, point8.G };
    int[] XB = new int[] { point1.B, point2.B, point3.B, point4.B, point5.B, point6.B, point7.B, point8.B };

    double SumRed = 0;
    double SumGreen = 0;
    double SumBlue = 0;

    for (int i = 0; i < XR.Length; i++)
    {
        SumRed += (Math.Abs(oPoint.R - XR[i])) * (Math.Abs(oPoint.R - XR[i]));
        SumGreen += (Math.Abs(oPoint.G - XG[i])) * (Math.Abs(oPoint.G - XG[i]));
        SumBlue += (Math.Abs(oPoint.B - XB[i])) * (Math.Abs(oPoint.B - XB[i]));
    }

    MessageBox.Show("The Average Difference of Red is = "
            + Math.Sqrt(SumRed) + "\n"
            + "The Average Difference of Green is = "
            + Math.Sqrt(SumGreen) + "\n"
            + "The Average Difference of Blue is = "
            + Math.Sqrt(SumBlue) + "\n");
}

private void按钮noiseavr\u单击（对象发送者，事件参数e）
{
Zeko点=新点（25,25）；
if（PictureBoxourcePicture.Image==null）
{
MessageBox.Show（“未加载图片”）；
返回；
}
如果（pictureBoxSourcePicture.Height！=clickedY | | pictureBoxSourcePicture.Width！=clickedX）
{
MessageBox.Show（“Adeekll”）；
//返回；
}
颜色点=（（位图）pictureBoxSourcePicture.Image）.GetPixel（点击X，点击Y）；
颜色点1=（（位图）pictureBoxSourcePicture.Image）.GetPixel（单击X-1，单击Y-1）；
颜色点2=（（位图）pictureBoxSourcePicture.Image）.GetPixel（点击X，点击Y-1）；
颜色点3=（（位图）pictureBoxSourcePicture.Image）.GetPixel（单击X+1，单击Y-1）；
颜色点4=（（位图）pictureBoxSourcePicture.Image）.GetPixel（单击X-1，单击Y+1）；
颜色点5=（（位图）pictureBoxSourcePicture.Image）.GetPixel（点击X，点击Y+1）；
颜色点6=（（位图）pictureBoxSourcePicture.Image）.GetPixel（单击X+1，单击Y+1）；
颜色点7=（（位图）pictureBoxSourcePicture.Image）.GetPixel（clickedX-1，clickedY）；
颜色点8=（（位图）pictureBoxSourcePicture.Image）.GetPixel（单击X+1，单击Y）；
//int[]XOR=newint[]{oPoint.R}；
//int[]XOG=newint[]{oPoint.G}；
//int[]XOB=新的int[]{oPoint.B}；
int[]XR=newint[]{point1.R，point2.R，point3.R，point4.R，point5.R，point6.R，point7.R，point8.R}；
int[]XG=newint[]{point1.G，point2.G，point3.G，point4.G，point5.G，point6.G，point7.G，point8.G}；
int[]XB=newint[]{point1.B，point2.B，point3.B，point4.B，point5.B，point6.B，point7.B，point8.B}；
双总和=0；
双色绿色=0；
双色蓝=0；
对于（int i=0；i

您可以按如下方式计算积分：

        Color[] points = new Color[8];
        int[] xPos = { -1, 0, 1, -1, 0, 1, -1, 1 };
        int[] yPos = { -1, -1, -1, 1, 1, 1, 0, 0 };
        for (int i = 0; i < 8; i++)
           points[i] = ((Bitmap)pictureBoxSourcePicture.Image).GetPixel(clickedX + xPos[i], clickedY + yPos[i]);

Color[]点=新颜色[8]；
int[]xPos={-1,0,1，-1,0,1，-1,1}；
int[]yPos={-1，-1,1,1,1,0,0}；
对于（int i=0；i<8；i++）
点[i]=（（位图）pictureBoxSourcePicture.Image）.GetPixel（点击X+xPos[i]，点击Y+yPos[i]）；

然后计算sumRed、sumGreen和SumBlue：

        for (int i = 0; i < points.Length; i++)
        {

            SumRed += Math.Pow( (Math.Abs(oPoint.R - points[i].R)),2);
            SumGreen += Math.Pow((Math.Abs(oPoint.R - points[i].G)), 2);
            SumBlue += Math.Pow((Math.Abs(oPoint.R - points[i].B)), 2);

        }

for（int i=0；i

它更简短，更容易理解。

---

希望这将是有用的

你曾经跟踪过

clickedX

和

clickedY

的值吗？你可以使用

System.Diagnostics.Debug.WriteLine

打印出值。我不想2更改我的代码，我只需要2处理错误，但无论如何都要感谢