1.窗体属性窗体居中

2.窗体属性窗体居中

            //窗体居中
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;

3.窗体去掉最小化、最大化

            //去掉最小化，去掉最大化
            MinimizeBox = false;
            MaximizeBox = false;

4.设置窗体不可拉伸

设置窗体的FormBorderStyle属性，将默认的”Sizable”改为” FixedSingle”或” Fixed3D”即可。

5.C#实现Form窗口最大化（最小化）

this.WindowState = FormWindowState.Maximized;//最大化:
this.WindowState = FormWindowState.Normal;//原始大小:
this.WindowState = FormWindowState.Minimized;//最小化:

6.Panel控件增加滚动条

AutoScroll=True
AutoScrollMiniSize 450,450 //设置逻辑区域尺寸，如果它大于控件尺寸就会出现滚动条。

7.WINFORM 中改变窗体大小

this.Size = new System.Drawing.Size(100, 100);

8.WINFORM 中动态添加按钮

        private void button1_Click(object sender, EventArgs e)
        {
            
            Button btn = new Button();
            btn.Width = 30;
            btn.Height = 30;
            btn.Text = "123";
            panel1.Controls.Add(btn);
        }

9.c#鼠标在控件上面,然后显示文字

先添加toolTip控件到界面

然后每个控件的属性会多一项 ToolTip

第一种:直接给里面加文字

第二种:

private void pictureBox_topmost_MouseHover(object sender, EventArgs e)
        {
            if (this.TopMost == true)
            {
                toolTip_jmt.SetToolTip(pictureBox_topmost, "取消置顶");
            }
            else 
            {
                toolTip_jmt.SetToolTip(pictureBox_topmost, "置顶");
            }
           
        }

10.winform TextBox设置透明

1，方法1：设置背景色与父容器的背景色一致；
在这里插入图片描述
2，方法2：自定义控件；

10.C# 鼠标点击移动窗体代码，可以实现无边框窗体的拖动

private static bool IsDrag = false;
private int enterX;
private int enterY;
private void setForm_MouseDown(object sender, MouseEventArgs e)
{
IsDrag = true;
enterX = e.Location.X;
enterY = e.Location.Y;
}

private void setForm_MouseUp(object sender, MouseEventArgs e)
{
IsDrag = false;
enterX = 0;
enterY = 0;
}

private void setForm_MouseMove(object sender, MouseEventArgs e)
{
if (IsDrag)
{
Left += e.Location.X - enterX;
Top += e.Location.Y - enterY;
}
}

11.Windform C# pictureBox 更换背景图片

       private void pbRun_Click(object sender, EventArgs e)
        {
            string pbName = pbRun.Tag.ToString();
            if (pbRun.Tag.ToString() == "0")
            {
                string localFilePath = @"../../Source/启动.png";
                Image Img = Image.FromFile(localFilePath);
                Image bmp = new Bitmap(Img);
                Img.Dispose();
                pbRun.Image = bmp;
                pbRun.SizeMode = PictureBoxSizeMode.StretchImage;
                pbRun.Tag = "1";
            }
            else
            {
                string localFilePath = @"../../Source/suspend.png";
                Image Img = Image.FromFile(localFilePath);
                Image bmp = new Bitmap(Img);
                Img.Dispose();
                pbRun.Image = bmp;
                pbRun.SizeMode = PictureBoxSizeMode.StretchImage;
                pbRun.Tag = "0";
            }
        }

12.c# datagridview列宽自适应设置

在这里插入图片描述

13.winform中改变DataGridview的列标题字体颜色

            DataGridViewCellStyle style = new DataGridViewCellStyle();
            style.ForeColor = Color.Red;
            foreach (DataGridViewColumn col in this.dataGridView1.Columns)
            {
                col.HeaderCell.Style = style;
            }
            //也可以在属性中更改ColumnHeadersDefaultCellStyle
            this.dataGridView1.EnableHeadersVisualStyles = false;
			//datagridview第一列空白隐藏掉
            this.dataGridView1.RowHeadersVisible = false;

14.C#窗体中的DataGridView取消选中条

 private void DataGridViewDetail_RowStateChanged(object sender, DataGridViewRowStateChangedEventArgs e)
        {
            //设置没有选中条
            e.Row.Selected = false;
        }

在这里插入图片描述

15.C# WINFORM 鼠标右键弹出菜单


private void Form1_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {//不要给窗口设置菜单，不然右键也有效
                contextMenuStrip1.Show(e.X + this.Left, e.Y + this.Top);
            }
        }