Winform 实现成功、警告、错误、信息提示弹窗
Winform 实现成功、警告、错误、信息提示弹窗
设置窗体基础属性和控件位置
首先建立一个名为FmMessageAlert的窗体，设置其背景（BackColor）为白色，设置StartPosition=FormStartPosition.CenterScreen，设置大小为263, 163，在窗体顶部放上容器名为plTitle，此容器上放按钮名为btnClose，在下发放图片控件名为pbIcon，如下：
画窗体边框
重新OnPaint方法，代码如下：
/*
以下为字段
*/
private const int maxWidth = 480;
private Color startColor = Color.Lime; // 渐变填充起始色
private Color endColor = Color.Blue; // 渐变填充结束颜色
private Color cancelColor = Color.FromArgb(144, 147, 153);
private float angle = 45f;// 渐变填充绘制角度
MessageAlertButtons messageBoxButtons;
MessageAlertIcon messageBoxIcon;
private Color iconColor;
private string _text;
private string _caption;
private Bitmap bitmap;
private Button btnOk;
private Button btnCancel;
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
// 画外围边框
using Pen pen = new Pen(iconColor, 1f);
Rectangle boder = new Rectangle(0, 0, ClientRectangle.Width - 1, ClientRectangle.Height - 1);
e.Graphics.DrawRectangle(pen, boder);
}给plTitle容器加上鼠标拖动事件
private Point _point;
private void plTitle_MouseDown(object sender, MouseEventArgs e)
{
_point = e.Location;
}
private void plTitle_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
this.Location = new Point(this.Location.X + e.X - _point.X, this.Location.Y + e.Y - _point.Y);
}给关闭按钮btnClose添加鼠标点击事件
private void btnClose_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.Cancel;
this.Close();
}窗体构造器
public FmMessageAlert(string text, string caption, MessageAlertButtons buttons, MessageAlertIcon icon)
{
InitializeComponent();
_text = text;
_caption = caption;
messageBoxButtons = buttons;
messageBoxIcon = icon;
SelectIcon(icon);
BindData();
}两个枚举
public enum MessageAlertButtons
{
//
// 摘要:
// The message box contains an OK button.
OK = 0,
//
// 摘要:
// The message box contains OK and Cancel buttons.
OKCancel = 1,
}
public enum MessageAlertIcon
{
Success,
Error,
Warning,
Information,
}BindData方法，绑定控件颜色及生成按钮
private void BindData()
{
lblTitle.Text = _caption;
rtbContent.Text = _text;
plTitle.BackColor = iconColor;
btnClose.BackColor = Color.Transparent;
btnClose.ForeColor = Color.White;
btnClose.Cursor = Cursors.Hand;
btnClose.FlatStyle = FlatStyle.Flat;
btnClose.FlatAppearance.BorderSize = 0;
btnClose.FlatAppearance.MouseOverBackColor = iconColor.ChangeColor(0.3f);
btnClose.FlatAppearance.MouseDownBackColor = iconColor.ChangeColor(-0.3f);
switch (messageBoxButtons)
{
case MessageAlertButtons.OK:
btnOk = new Button();
btnOk.Text = "确定";
btnOk.BackColor = iconColor;
btnOk.ForeColor = Color.White;
btnOk.Cursor = Cursors.Hand;
btnOk.FlatStyle = FlatStyle.Flat;
btnOk.FlatAppearance.BorderSize = 0;
btnOk.FlatAppearance.MouseOverBackColor = iconColor.ChangeColor(0.3f);
btnOk.FlatAppearance.MouseDownBackColor = iconColor.ChangeColor(-0.3f);
btnOk.Location = new Point(81, 122);
btnOk.Size = new Size(100, 35);
btnOk.Click += btnConfirm_Click;
this.Controls.Add(btnOk);
break;
default:
btnOk = new Button();
btnOk.Text = "确定";
btnOk.BackColor = iconColor;
btnOk.ForeColor = Color.White;
btnOk.Cursor = Cursors.Hand;
btnOk.FlatStyle = FlatStyle.Flat;
btnOk.FlatAppearance.BorderSize = 0;
btnOk.FlatAppearance.MouseOverBackColor = iconColor.ChangeColor(0.3f);
btnOk.FlatAppearance.MouseDownBackColor = iconColor.ChangeColor(-0.3f);
btnOk.Location = new Point(29, 122);
btnOk.Size = new Size(100, 35);
btnOk.Click += btnConfirm_Click;
this.Controls.Add(btnOk);
btnCancel = new Button();
btnCancel.Text = "取消";
btnCancel.BackColor = cancelColor;
btnCancel.ForeColor = Color.White;
btnCancel.Cursor = Cursors.Hand;
btnCancel.FlatStyle = FlatStyle.Flat;
btnCancel.FlatAppearance.BorderSize = 0;
btnCancel.FlatAppearance.MouseOverBackColor = cancelColor.ChangeColor(0.3f);
btnCancel.FlatAppearance.MouseDownBackColor = cancelColor.ChangeColor(-0.3f);
btnCancel.Location = new Point(134, 122);
btnCancel.Size = new Size(100, 35);
btnCancel.Click += btnCancel_Click;
this.Controls.Add(btnCancel);
break;
}
pbIcon.Image = bitmap;
}自动调整控件位置（此方法一定要放在窗体Load事件中）
const int unitWidth = 10;
private void Resize()
{
int w1 = lblTitle.Width, w2 = rtbContent.Width, h = rtbContent.Height;
while (btnClose.Location.X - lblTitle.Location.X - lblTitle.Width < 5 && this.Width <= maxWidth)
{
rtbContent.AutoAdjustWidth(unitWidth, rtbContent.Width + unitWidth);
this.Width += unitWidth;
AdjustPosition();
this.plTitle.Width += unitWidth;
this.btnClose.Location = new Point(this.btnClose.Location.X + unitWidth, this.btnClose.Location.Y);
}
int n = _caption.Length;
while (lblTitle.Width > 432)
{
lblTitle.Text = _caption[0..--n] + "...";
}
while (rtbContent.IsVerticalScrollBarVisible() && this.Width <= maxWidth)
{
//rtbContent.AutoAdjustWidth(unitWidth,rtbContent.Width + unitWidth);
rtbContent.Width += unitWidth;
this.Width += unitWidth;
AdjustPosition();
this.plTitle.Width += unitWidth;
this.btnClose.Location = new Point(this.btnClose.Location.X + unitWidth, this.btnClose.Location.Y);
}
int maxw = w1;
if (w1 < w2)
maxw = w2;
rtbContent.AutoAdjustHigh();
if (rtbContent.Height >= 65)
{
int h1 = rtbContent.Height - 65;
this.Height += h1;
this.btnOk.Location = new Point(this.btnOk.Location.X, this.rtbContent.Location.Y + this.rtbContent.Height + 6);
if (btnCancel != null)
{
this.btnCancel.Location = new Point(this.btnCancel.Location.X, this.btnOk.Location.Y);
}
}
}
///
/// 调整按钮位置
///
private void AdjustPosition()
{
if (btnCancel != null)
{
int w = (this.Width - this.btnOk.Width - btnCancel.Width - 6) >> 1;
this.btnOk.Location = new Point(w, this.btnOk.Location.Y);
this.btnCancel.Location = new Point(w + 100 + 6, this.btnCancel.Location.Y);
}
else
{
this.btnOk.Location = new Point((this.Width - this.btnOk.Width) >> 1, this.btnOk.Location.Y);
}
}选择图标和颜色
private void SelectIcon(MessageAlertIcon icon)
{
switch (icon)
{
case MessageAlertIcon.Error:
iconColor = Color.FromArgb(245, 108, 108);
bitmap = Properties.Resources.error;
break;
case MessageAlertIcon.Warning:
iconColor = Color.FromArgb(230, 162, 60);
bitmap = Properties.Resources.waring;
break;
case MessageAlertIcon.Success:
iconColor = Color.FromArgb(103, 194, 58);
bitmap = Properties.Resources.success;
break;
default:
iconColor = Color.FromArgb(64, 158, 255);
bitmap = Properties.Resources.infomation_circle;
break;
}
}颜色扩展
public static class ColorEx
{
/*
* 加深：correctionFactor<0
变亮：correctionFactor>0
-1.0f <= correctionFactor <= 1.0f
*/
public static Color ChangeColor(this Color color, float correctionFactor)
{
float red = (float)color.R;
float green = (float)color.G;
float blue = (float)color.B;
if (correctionFactor < 0)
{
correctionFactor = 1 + correctionFactor;
red *= correctionFactor;
green *= correctionFactor;
blue *= correctionFactor;
}
else
{
red = (255 - red) * correctionFactor + red;
green = (255 - green) * correctionFactor + green;
blue = (255 - blue) * correctionFactor + blue;
}
if (red < 0) red = 0;
if (red > 255) red = 255;
if (green < 0) green = 0;
if (green > 255) green = 255;
if (blue < 0) blue = 0;
if (blue > 255) blue = 255;
return Color.FromArgb(color.A, (int)red, (int)green, (int)blue);
}
}RichTextBox扩展
public static class RichTextBoxEx
{
private const int WS_HSCROLL = 0x100000;
private const int WS_VSCROLL = 0x200000;
private const int GWL_STYLE = (-16);
[System.Runtime.InteropServices.DllImport("user32", CharSet = System.Runtime.InteropServices.CharSet.Auto)]
private static extern int GetWindowLong(IntPtr hwnd, int nIndex);
///
/// 判断是否出现垂直滚动条
///
/// 待测控件
/// 出现垂直滚动条返回true，否则为false
public static bool IsVerticalScrollBarVisible(this Control ctrl)
{
if (!ctrl.IsHandleCreated)
return false;
return (GetWindowLong(ctrl.Handle, GWL_STYLE) & WS_VSCROLL) != 0;
}
///
/// 判断是否出现水平滚动条
///
/// 待测控件
/// 出现水平滚动条返回true，否则为false
public static bool IsHorizontalScrollBarVisible(this Control ctrl)
{
if (!ctrl.IsHandleCreated)
return false;
return (GetWindowLong(ctrl.Handle, GWL_STYLE) & WS_HSCROLL) != 0;
}
///
/// 自动调整高度
///
///
/// 每次调整最小高度
/// 最大高度，0和负数表示没有高度限制
public static void AutoAdjustHigh(this Control ctrl,int high=24,int maxHigh=-1)
{
if(ctrl.IsVerticalScrollBarVisible())
{
int h=ctrl.Height;
h += high;
if (maxHigh > 0 && h > maxHigh)
return;
ctrl.Height = h;
ctrl.AutoAdjustHigh(high);
}
}
///
/// 自动调整宽度
///
///
/// 每次调整最小宽度
/// 最大宽度，-0和负数表示没有宽度限制
public static void AutoAdjustWidth(this Control ctrl, int width = 10, int maxWidth = -1)
{
if (ctrl.IsHorizontalScrollBarVisible())
{
int w = ctrl.Width;
w += width;
if (maxWidth > 0 && w > maxWidth)
return;
ctrl.Width = w ;
ctrl.AutoAdjustWidth(width);
}
}
}提示窗体所有代码：
public partial class FmMessageAlert : Form
{
private const int maxWidth = 480;
private Color startColor = Color.Lime; // 渐变填充起始色
private Color endColor = Color.Blue; // 渐变填充结束颜色
private Color cancelColor = Color.FromArgb(144, 147, 153);
private float angle = 45f;// 渐变填充绘制角度
MessageAlertButtons messageBoxButtons;
MessageAlertIcon messageBoxIcon;
private Color iconColor;
private string _text;
private string _caption;
private Bitmap bitmap;
private Button btnOk;
private Button btnCancel;
public FmMessageAlert(string text, string caption, MessageAlertButtons buttons, MessageAlertIcon icon)
{
InitializeComponent();
_text = text;
_caption = caption;
messageBoxButtons = buttons;
messageBoxIcon = icon;
SelectIcon(icon);
BindData();
}
private void BindData()
{
lblTitle.Text = _caption;
rtbContent.Text = _text;
plTitle.BackColor = iconColor;
btnClose.BackColor = Color.Transparent;
btnClose.ForeColor = Color.White;
btnClose.Cursor = Cursors.Hand;
btnClose.FlatStyle = FlatStyle.Flat;
btnClose.FlatAppearance.BorderSize = 0;
btnClose.FlatAppearance.MouseOverBackColor = iconColor.ChangeColor(0.3f);
btnClose.FlatAppearance.MouseDownBackColor = iconColor.ChangeColor(-0.3f);
switch (messageBoxButtons)
{
case MessageAlertButtons.OK:
btnOk = new Button();
btnOk.Text = "确定";
btnOk.BackColor = iconColor;
btnOk.ForeColor = Color.White;
btnOk.Cursor = Cursors.Hand;
btnOk.FlatStyle = FlatStyle.Flat;
btnOk.FlatAppearance.BorderSize = 0;
btnOk.FlatAppearance.MouseOverBackColor = iconColor.ChangeColor(0.3f);
btnOk.FlatAppearance.MouseDownBackColor = iconColor.ChangeColor(-0.3f);
btnOk.Location = new Point(81, 122);
btnOk.Size = new Size(100, 35);
btnOk.Click += btnConfirm_Click;
this.Controls.Add(btnOk);
break;
default:
btnOk = new Button();
btnOk.Text = "确定";
btnOk.BackColor = iconColor;
btnOk.ForeColor = Color.White;
btnOk.Cursor = Cursors.Hand;
btnOk.FlatStyle = FlatStyle.Flat;
btnOk.FlatAppearance.BorderSize = 0;
btnOk.FlatAppearance.MouseOverBackColor = iconColor.ChangeColor(0.3f);
btnOk.FlatAppearance.MouseDownBackColor = iconColor.ChangeColor(-0.3f);
btnOk.Location = new Point(29, 122);
btnOk.Size = new Size(100, 35);
btnOk.Click += btnConfirm_Click;
this.Controls.Add(btnOk);
btnCancel = new Button();
btnCancel.Text = "取消";
btnCancel.BackColor = cancelColor;
btnCancel.ForeColor = Color.White;
btnCancel.Cursor = Cursors.Hand;
btnCancel.FlatStyle = FlatStyle.Flat;
btnCancel.FlatAppearance.BorderSize = 0;
btnCancel.FlatAppearance.MouseOverBackColor = cancelColor.ChangeColor(0.3f);
btnCancel.FlatAppearance.MouseDownBackColor = cancelColor.ChangeColor(-0.3f);
btnCancel.Location = new Point(134, 122);
btnCancel.Size = new Size(100, 35);
btnCancel.Click += btnCancel_Click;
this.Controls.Add(btnCancel);
break;
}
pbIcon.Image = bitmap;
}
const int unitWidth = 10;
private void Resize()
{
int w1 = lblTitle.Width, w2 = rtbContent.Width, h = rtbContent.Height;
while (btnClose.Location.X - lblTitle.Location.X - lblTitle.Width < 5 && this.Width <= maxWidth)
{
rtbContent.AutoAdjustWidth(unitWidth, rtbContent.Width + unitWidth);
this.Width += unitWidth;
AdjustPosition();
this.plTitle.Width += unitWidth;
this.btnClose.Location = new Point(this.btnClose.Location.X + unitWidth, this.btnClose.Location.Y);
}
int n = _caption.Length;
while (lblTitle.Width > 432)
{
lblTitle.Text = _caption[0..--n] + "...";
}
while (rtbContent.IsVerticalScrollBarVisible() && this.Width <= maxWidth)
{
//rtbContent.AutoAdjustWidth(unitWidth,rtbContent.Width + unitWidth);
rtbContent.Width += unitWidth;
this.Width += unitWidth;
AdjustPosition();
this.plTitle.Width += unitWidth;
this.btnClose.Location = new Point(this.btnClose.Location.X + unitWidth, this.btnClose.Location.Y);
}
int maxw = w1;
if (w1 < w2)
maxw = w2;
rtbContent.AutoAdjustHigh();
if (rtbContent.Height >= 65)
{
int h1 = rtbContent.Height - 65;
this.Height += h1;
this.btnOk.Location = new Point(this.btnOk.Location.X, this.rtbContent.Location.Y + this.rtbContent.Height + 6);
if (btnCancel != null)
{
this.btnCancel.Location = new Point(this.btnCancel.Location.X, this.btnOk.Location.Y);
}
}
}
///
/// 调整按钮位置
///
private void AdjustPosition()
{
if (btnCancel != null)
{
int w = (this.Width - this.btnOk.Width - btnCancel.Width - 6) >> 1;
this.btnOk.Location = new Point(w, this.btnOk.Location.Y);
this.btnCancel.Location = new Point(w + 100 + 6, this.btnCancel.Location.Y);
}
else
{
this.btnOk.Location = new Point((this.Width - this.btnOk.Width) >> 1, this.btnOk.Location.Y);
}
}
private void SelectIcon(MessageAlertIcon icon)
{
switch (icon)
{
case MessageAlertIcon.Error:
iconColor = Color.FromArgb(245, 108, 108);
bitmap = Properties.Resources.error;
break;
case MessageAlertIcon.Warning:
iconColor = Color.FromArgb(230, 162, 60);
bitmap = Properties.Resources.waring;
break;
case MessageAlertIcon.Success:
iconColor = Color.FromArgb(103, 194, 58);
bitmap = Properties.Resources.success;
break;
default:
iconColor = Color.FromArgb(64, 158, 255);
bitmap = Properties.Resources.infomation_circle;
break;
}
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
// 画外围边框
using Pen pen = new Pen(iconColor, 1f);
Rectangle boder = new Rectangle(0, 0, ClientRectangle.Width - 1, ClientRectangle.Height - 1);
e.Graphics.DrawRectangle(pen, boder);
}
private void btnClose_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.Cancel;
this.Close();
}
private void FmMessageAlert_FormClosing(object sender, FormClosingEventArgs e)
{
bitmap.Dispose();
btnOk.Dispose();
btnCancel?.Dispose();
btnClose.Dispose();
this.Dispose();
}
///
/// 确认
///
///
///
private void btnConfirm_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.OK;
this.Close();
}
private void btnCancel_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.Cancel;
this.Close();
}
private void FmMessageAlert_Load(object sender, EventArgs e)
{
Resize();
}
private Point _point;
private void plTitle_MouseDown(object sender, MouseEventArgs e)
{
_point = e.Location;
}
private void plTitle_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
this.Location = new Point(this.Location.X + e.X - _point.X, this.Location.Y + e.Y - _point.Y);
}
}为其加上扩展方法
///
/// 弹窗提示扩展
///
public static class MessageAlertEx
{
///
/// 弹窗提示扩展
///
/// 提示内容
/// 标题
/// 按钮（目前只实现Ok、OkCancel）
/// 图标（目前只实现Success、Error、Warning、Information）
/// 返回DialogResult结果
public static DialogResult ShowAlert(string text, string caption, MessageAlertButtons buttons, MessageAlertIcon icon)
{
using FmMessageAlert userMessageAlertControl = new FmMessageAlert(text, caption, buttons, icon);
return userMessageAlertControl.ShowDialog();
}
public static DialogResult ShowAlert(string text, string caption)
{
return ShowAlert(text, caption, MessageAlertButtons.OK, MessageAlertIcon.Information);
}
public static DialogResult ShowAlert(this Form form, string text, string caption, MessageAlertButtons buttons, MessageAlertIcon icon)
{
return ShowAlert(text, caption, buttons, icon);
}
public static DialogResult ShowAlert(this Form form, string text, string caption)
{
return ShowAlert(text, caption);
}
}在窗体中使用
this.ShowAlert("成功", "提示", MessageAlertButtons.OK, Common.MessageAlertIcon.Success);
this.ShowAlert("失败", "提示", MessageAlertButtons.OK, Common.MessageAlertIcon.Error);
// 或者
MessageAlertEx.ShowAlert("失败", "提示", MessageAlertButtons.OK, Common.MessageAlertIcon.Error);效果
