c# - 更新另一个类的值
问题描述
我有这段代码使用 ShapeClass.cs 绘制一个矩形。但我想使用主窗体中的按钮事件更新 Rectangle 参数。我怎么做?PaintRectangle 类仅从主窗体获取文本框上的初始值。..................................................... ..................................................... ..................................................... ......
主班
#region //Passing of values
public string ShapeWidth() { return textBox_Shape_Width.Text;}
public string ShapeHeight() { return textBox_Shape_Height.Text; }
#endregion
private void btn_Draw_Click(object sender, EventArgs e)
{
ShapeClass s = new ShapeClass();
var value = s.diffVar[0];
MessageBox.Show(value.ToString());
pictureBox_Canvas.Paint += paintRect;
pictureBox_Canvas.Refresh();
}
#region //Methods for Hide and Show
public void HideButtons()
{
btn_Rectangle.Visible = false;
btn_Square.Visible = false;
btn_Ellipse.Visible = false;
btn_Circle.Visible = false;
btn_Triangle.Visible = false;
}
public void ShowButtons()
{
btn_Rectangle.Visible = true;
btn_Square.Visible = true;
btn_Ellipse.Visible = true;
btn_Circle.Visible = true;
btn_Triangle.Visible = true;
}
public void HideSettings()
{
btn_Draw.Visible = false;
btn_Accept.Visible = false;
btn_Cancel.Visible = false;
btn_Reset.Visible = false;
btn_Accept.Visible = false;
trackBar_Size.Visible = false;
trackBar_Stroke.Visible = false;
trackBar_Corner.Visible = false;
label_Corner.Visible = false;
label_Height.Visible = false;
label_Size.Visible = false;
label_Stroke.Visible = false;
rb_Both.Visible = false;
rb_Height.Visible = false;
rb_Width.Visible = false;
textBox_Shape_Height.Visible =false;
textBox_Shape_Width.Visible = false;
lbl_Width.Visible = false;
}
public void ShowSettings()
{
btn_Draw.Visible = true;
btn_Accept.Visible = true;
btn_Cancel.Visible = true;
btn_Reset.Visible = true;
btn_Accept.Visible = true;
trackBar_Size.Visible = true;
trackBar_Stroke.Visible = true;
trackBar_Corner.Visible = true;
label_Corner.Visible = true;
label_Height.Visible = true;
label_Size.Visible = true;
label_Stroke.Visible = true;
rb_Both.Visible = true;
rb_Height.Visible = true;
rb_Width.Visible = true;
textBox_Shape_Height.Visible = true;
textBox_Shape_Width.Visible = true;
lbl_Width.Visible = true;
}
#endregion
#region //Rectangle Creation and Scaling
private void btn_Rectangle_Click(object sender, EventArgs e)
{
HideButtons();
ShowSettings();
}
public void paintRect(object sender, PaintEventArgs e)
{
ShapeClass s = new ShapeClass();
s.paintRectangle(e);
}
#endregion
#region //Show and Hide Grid (Checkbox Event)
//Drawing the Grid
private void checkBox_Grid_CheckedChanged(object sender, EventArgs e)
{
if (checkBox_Grid.Checked == true)
{
DrawGrid();
}
else if (!checkBox_Grid.Checked == true)
{
pictureBox_Canvas.Refresh();
HideGrid();
}
else
return;
}
private void DrawGrid()
{
Graphics grid = Graphics.FromImage(bm);
int numOfCells = 301;
int cellSize = 5;
Pen p = new Pen(Color.LightSlateGray);
p.Width = 0.5F;
for (int y = 0; y < numOfCells; ++y)
{
grid.DrawLine(p, 0, y * cellSize, numOfCells * cellSize, y * cellSize);
}
for (int x = 0; x < numOfCells; ++x)
{
grid.DrawLine(p, x * cellSize, 0, x * cellSize, numOfCells * cellSize);
}
pictureBox_Canvas.Image = bm;
}
//Hides the Grid
private void HideGrid()
{
Graphics grid = Graphics.FromImage(bm);
Pen p = new Pen(Color.White);
p.Width = 0.5F;
int numOfCells = 301;
int cellSize = 5;
for (int y = 0; y < numOfCells; ++y)
{
grid.DrawLine(p, 0, y * cellSize, numOfCells * cellSize, y * cellSize);
}
for (int x = 0; x < numOfCells; ++x)
{
grid.DrawLine(p, x * cellSize, 0, x * cellSize, numOfCells * cellSize);
}
pictureBox_Canvas.Image = bm;
}
#endregion
#region //Square Creation and Scaling
private void btn_Square_Click(object sender, EventArgs e)
{
HideButtons();
ShowSettings();
}
#endregion
#region //Circle Creation and Scaling
private void btn_Circle_Click(object sender, EventArgs e)
{
HideButtons();
ShowSettings();
}
#endregion
#region //Ellipse Creation and Scaling
private void btn_Ellipse_Click(object sender, EventArgs e)
{
HideButtons();
ShowSettings();
}
#endregion
#region //Triangle Creation and Scaling
private void btn_Triangle_Click(object sender, EventArgs e)
{
HideButtons();
ShowSettings();
}
#endregion
#region //Accept Button
private void btn_Accept_Click(object sender, EventArgs e)
{
HideSettings();
ShowButtons();
}
#endregion
#region //Reset Button
private void btn_Reset_Click(object sender, EventArgs e)
{
HideSettings();
ShowButtons();
}
#endregion
#region //Cancel Button
private void btn_Cancel_Click(object sender, EventArgs e)
{
HideSettings();
ShowButtons();
}
#endregion
#region //VALIDATIONS
private void textBox_Shape_Width_TextChanged(object sender, EventArgs e)
{
if(Convert.ToInt32(textBox_Shape_Width.Text)>128)
{
MessageBox.Show("Width cannot exceed 128.");
textBox_Shape_Width.Text = 128.ToString();
}
}
private void textBox_Shape_Height_TextChanged(object sender, EventArgs e)
{
if (Convert.ToInt32(textBox_Shape_Height.Text) > 128)
{
MessageBox.Show("Height cannot exceed 128");
textBox_Shape_Height.Text = 128.ToString();
}
}
#endregion
private void trackBar_Size_ValueChanged(object sender, EventArgs e)
{
}
}
}
形状类
namespace SealCreator2._0
{
public class ShapeClass :Form1
{
Form1 f1 = new Form1();
public double w1,h1, Rect_Width;
public List<object> diffVar = new List<object>();
public void paintRectangle(PaintEventArgs e)
{
int x, y;
w1 = Convert.ToDouble((Convert.ToInt32(f1.ShapeWidth()) * 96) / 25.4);
h1 = Convert.ToDouble((Convert.ToInt32(f1.ShapeHeight()) * 96) / 25.4);
x = ((484 / 2) - (Convert.ToInt32(w1) / 2)); // Positions the Shape in the center of the PictureBox
y = ((484 / 2) - (Convert.ToInt32(h1) / 2));// Positions the Shape in the center of the PictureBox
//Draws a Rectangle
Pen red = new Pen(Color.Red, 3);
Rectangle rect = new Rectangle(x, y, Convert.ToInt32(w1), Convert.ToInt32(h1));
e.Graphics.DrawRectangle(red, rect);
diffVar.Add(w1);
diffVar.Add(h1);
}
}
}
解决方案
添加另一个函数来更改参数。例如:
void UpdateParameters()
{
ChangeParameters();
}
给你另一个建议:你可以编辑这个问题来添加代码。
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