c# 右下角弹出提示 实例 附完整源码

ueditor编辑器含有如下功能： 全屏源码撤销重做无序列表有序列表取消超链接超链接清空文档全选打印查询替换预览Google地图百度地图百度应用分页图片涂鸦音乐附件截图表情视频插入Iframe模版背景日期时间图片转存水平线锚点特殊字符引用插入代码加粗斜体下划线删除线文字颜色背景颜色上标下标居左对齐居中对齐居右对齐两端对齐字母大写字母小写从左向右输从右向左输首行缩进清除格式格式刷自动排版纯文本粘贴自定义样式段落格式段前间距段后间距行间距字体字号图片默认图片居左图片居右图片居中插入表格删除表格右合并单元格下合并单元格拆分成行拆分成列拆成单元格合并单元格前插入列前插入行删除列删除行表格前插行自动聚焦工具栏浮动字数统计表情本地化自动清除自动长高元素路径图片浮层纯文本粘贴源码高亮右键菜单 而且可以自定义插件 二次开发

linq操作数据以及集合实例

实现winform图片特效

实现了微信5.0所有接口。

查看域名是否能够注册

DataGridViewRowStyle  核心用法 截图： 核心代码：using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace TestDataGridViewRowStyle{ public partial class Form1 : Form { //定义两种行样式 private DataGridViewCellStyle m_RowStyleNormal; private DataGridViewCellStyle m_RowStyleAlternate; //成绩单DataTable private DataTable m_GradeTable; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { this.dgvGrade.AutoGenerateColumns = false; this.SetRowStyle(); this.BindData(); } /// /// 设置行样式 /// private void SetRowStyle() { //可根据需要设置更多样式属性，如字体、对齐、前景色、背景色等 this.m_RowStyleNormal = new DataGridViewCellStyle(); this.m_RowStyleNormal.BackColor = Color.LightBlue; this.m_RowStyleNormal.SelectionBackColor = Color.LightSteelBlue; this.m_RowStyleAlternate = new DataGridViewCellStyle(); this.m_RowStyleAlternate.BackColor = Color.LightGray; this.m_RowStyleAlternate.SelectionBackColor = Color.LightSlateGray; } /// /// 绑定数据 /// private void BindData() { //建立一个DataTable并填充数据，然后绑定到DataGridView控件上 m_GradeTable = new DataTable(); m_GradeTable.Columns.Add("Class", typeof(string)); m_GradeTable.Columns.Add("Name", typeof(string)); m_GradeTable.Columns.Add("Grade", typeof(int)); m_GradeTable.Rows.Add(new string[] { "Class1", "Jim", "89" }); m_GradeTable.Rows.Add(new string[] { "Class1", "Jack", "77" }); m_GradeTable.Rows.Add(new string[] { "Class1", "Bill", "91" }); m_GradeTable.Rows.Add(new string[] { "Class2", "Tom", "58" }); m_GradeTable.Rows.Add(new string[] { "Class2", "Rose", "95" }); m_GradeTable.Rows.Add(new string[] { "Class3", "Peter", "64" }); m_GradeTable.Rows.Add(new string[] { "Class3", "David", "82" }); m_GradeTable.Rows.Add(new string[] { "Class3", "Eric", "68" }); m_GradeTable.Rows.Add(new string[] { "Class3", "Lily", "79" }); this.bdsGrade.DataSource = m_GradeTable; } private void dgvDataTable_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e) { //在此对行样式进行设置 if (e.ColumnIndex == this.dgvGrade.Columns["ColumnClass"].Index)//根据班级设置行样式 { DataGridViewRow CurrentRow = this.dgvGrade.Rows[e.RowIndex]; CurrentRow.HeaderCell.Value = Convert.ToString(e.RowIndex 1);//显示行号，也可以设置成显示其他信息 //CurrentRow.HeaderCell.ToolTipText = "当前第" Convert.ToString(e.RowIndex 1) "行";//设置ToolTip信息 //以下为根据上一行内容判断所属组的效果 if (e.RowIndex == 0)//首行必须特殊处理，将其设置为常规样式 { CurrentRow.DefaultCellStyle = this.m_RowStyleNormal; } else { //判断和上一行是否属于同一个班级，如果是则设置相同样式，否则设置另一种样式 //需要定义两个DataGridViewCellStyle，用于交替显示，也可以根据需要隐藏一些和上一行重复的信息 //这里当两行是同一个班级时，将下一行的班级信息隐藏掉，选中时则显示班级信息 if (CurrentRow.Cells[e.ColumnIndex].Value != DBNull.Value && CurrentRow.Cells[e.ColumnIndex].Value != null && CurrentRow.Cells[e.ColumnIndex].Value.ToString() == this.dgvGrade.Rows[e.RowIndex - 1].Cells[e.ColumnIndex].Value.ToString()) { CurrentRow.DefaultCellStyle = this.dgvGrade.Rows[e.RowIndex - 1].DefaultCellStyle;//设置和上一行的样式相同 CurrentRow.Cells[e.ColumnIndex].Style.ForeColor = CurrentRow.DefaultCellStyle.BackColor;//用前景色隐藏信息 //如果需要选中时显示完整信息则注释该下面一行 //CurrentRow.Cells[e.ColumnIndex].Style.SelectionForeColor = CurrentRow.DefaultCellStyle.SelectionBackColor;//选中时也使前景色等于背景色，将文字隐藏掉 } else//当前行和上一行不属于同一个班级时 { if (this.dgvGrade.Rows[e.RowIndex - 1].DefaultCellStyle == this.m_RowStyleNormal)//根据上一行的样式设置当前行的样式 CurrentRow.DefaultCellStyle = this.m_RowStyleAlternate; else CurrentRow.DefaultCellStyle = this.m_RowStyleNormal; } }//if(e.RowIndex == 0) } else if (e.ColumnIndex == this.dgvGrade.Columns["ColumnGrade"].Index)//根据成绩设置单元格样式 { if (this.dgvGrade.Rows[e.RowIndex].Cells[e.ColumnIndex].Value != DBNull.Value && Convert.ToInt32(this.dgvGrade.Rows[e.RowIndex].Cells[e.ColumnIndex].Value) < 60)//对不及格的成绩设置特殊样式 { this.dgvGrade.Rows[e.RowIndex].Cells[e.ColumnIndex].Style.ForeColor = Color.Red;//设置小于60的数字显示为红色 this.dgvGrade.Rows[e.RowIndex].Cells[e.ColumnIndex].Style.SelectionForeColor = Color.Red; this.dgvGrade.Rows[e.RowIndex].Cells[e.ColumnIndex].Style.Alignment = DataGridViewContentAlignment.MiddleRight; } } } //根据内容设置行标头 private void dgvDataTable_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e) { if (this.dgvGrade.Rows[e.RowIndex].Cells["ColumnGrade"].Value == DBNull.Value) return; int intGrade = Convert.ToInt32(this.dgvGrade.Rows[e.RowIndex].Cells["ColumnGrade"].Value);//获取成绩 Image RowIcon;//标头图标 string strToolTip;//提示信息 if (intGrade >= 90) { RowIcon = TestDataGridViewRowStyle.Properties.Resources.GradeA;//从资源文件中获取图片 strToolTip = "Grade A"; } else if (intGrade >= 80) { RowIcon = TestDataGridViewRowStyle.Properties.Resources.GradeB; strToolTip = "Grade B"; } else if (intGrade >= 70) { RowIcon = TestDataGridViewRowStyle.Properties.Resources.GradeC; strToolTip = "Grade C"; } else if (intGrade >= 60) { RowIcon = TestDataGridViewRowStyle.Properties.Resources.GradeD; strToolTip = "Grade D"; } else { RowIcon = TestDataGridViewRowStyle.Properties.Resources.GradeF; strToolTip = "Grade F"; } e.Graphics.DrawImage(RowIcon, e.RowBounds.Left this.dgvGrade.RowHeadersWidth - 20, e.RowBounds.Top 4, 16, 16);//绘制图标 this.dgvGrade.Rows[e.RowIndex].HeaderCell.ToolTipText = strToolTip;//设置提示信息 } private void dgvGrade_CellPainting(object sender, DataGridViewCellPaintingEventArgs e) { if (e.RowIndex >=0 && e.ColumnIndex == 2) { if (this.dgvGrade.Rows[e.RowIndex].Cells["ColumnGrade"].Value == DBNull.Value) return; int intGrade = Convert.ToInt32(this.dgvGrade.Rows[e.RowIndex].Cells["ColumnGrade"].Value); Image img; if (intGrade >= 90) { img = TestDataGridViewRowStyle.Properties.Resources.high; } else if (intGrade >= 80) { img = TestDataGridViewRowStyle.Properties.Resources.arrow; } else if (intGrade >= 70) { img = TestDataGridViewRowStyle.Properties.Resources.up; } else if (intGrade >= 60) { img = TestDataGridViewRowStyle.Properties.Resources.down; } else { img = TestDataGridViewRowStyle.Properties.Resources.low; } Rectangle newRect = new Rectangle(e.CellBounds.X 3, e.CellBounds.Y 5, e.CellBounds.Height - 15, e.CellBounds.Height - 12); using (Brush gridBrush = new SolidBrush(this.dgvGrade.GridColor), backColorBrush = new SolidBrush(e.CellStyle.BackColor)) { using (Pen gridLinePen = new Pen(gridBrush, 2)) { // Erase the cell. e.Graphics.FillRectangle(backColorBrush, e.CellBounds); //划线 Point p1 = new Point(e.CellBounds.Left e.CellBounds.Width, e.CellBounds.Top); Point p2 = new Point(e.CellBounds.Left e.CellBounds.Width, e.CellBounds.Top e.CellBounds.Height); Point p3 = new Point(e.CellBounds.Left, e.CellBounds.Top e.CellBounds.Height); Point[] ps = new Point[] { p1, p2, p3 }; e.Graphics.DrawLines(gridLinePen, ps); //画图标 e.Graphics.DrawImage(img, newRect); //画字符串 e.Graphics.DrawString(intGrade.ToString(), e.CellStyle.Font, Brushes.Crimson, e.CellBounds.Left 20, e.CellBounds.Top 5, StringFormat.GenericDefault); e.Handled = true; } } } } }}

石英时钟实例源码，仅供参考学习使用，效果很不错哦

在征询建议的基础上进行了补全修改，正式写为DLL，可以完成基本的报表定制、打印功能。在程序设计中，很多时候报表不需要那么庞杂的功能，一些小程序的数据库报表只需要简单处理，就没必要安装FastReport、Crystal Reports、DevExpress等庞大组件了。由于为前面征询意见的补全，所以不需分数。此程序代码可优化、功能可添加，自行完善修改。1、调用方式：将EzReport_Build.dll添加到引用中，将fontawesome-webfont.ttf字库文件放置在一起private void button1_Click(object sender, EventArgs e){    Form_Desing.Initialize_Design();}即可，也可将Preview.cs、Form_Desing.cs中的private PanelEx修改为public PanelEx，在你的Form中直接嵌入调用，比如打印、预览比例等函数有些已设置为public，也可将需要的函数和组件设为public直接调用。数据库定义在：Define_DataLink.cs绘制定义在：Draw_Function.cs报表组件、界面颜色等定义在：Define_Global.cs界面等其他附属在ui文件夹2、 打印模式设置dpi为96，SetResolution(96, 96);相对应dpi打印纸张类型：public static string[] page_types = new string[24] {            "A0","A1","A2","A3","A4","A5","A6","A7",            "B0","B1","B2","B3","B4","B5","B6","B7",            "C0","C1","C2","C3","C4","C5","C6","C7"        };以及自定义纸张（单位设置为毫米）换算公式为：(int)Math.Floor(int.Parse(input_def[0].textBox.Text) * 3.779527559055118)相对应纸张大小（毫米）public static string[] page_size = new string[24] {"841×1189","594×841","420×594","297×420","210×297","148×210","105×148","74×105","1000×1414","707×1000","500×707","353×500","250×353","176×250","125×176","88×125","917×1297","648×917","458×648","324×458","229×324","162×229","114×162","81×114"        };对应像素为：public static string[] page_pixel = new string[24] {"3178×4493","2245×3178","1587×2245","1122×1587","793×1122","559×793","396×559","279×396","3779×5344","2672×3779","1889×2672","1334×1889","944×1334","665×944","472×665","332×472","3465×4902","2449×3465","1731×2449","1235×1731","865×1224","612×865","430×612","306×430"        }; 按照ISO标准纸型、尺寸设置。打印支持选项：  3、快捷键Ctrl 上、下、左、右可移动组件Shift 上、下、左、右调整组件大小Alt V 粘贴、Alt C复制、等，在报表组件上点击右键，菜单中可看见或在报表栏目空白处点击右键。4、 其余可参见代码中public函数，其他说明可参见草稿：https://www.haolizi.net/example/view_16592.html征求意见稿：https://www.haolizi.net/example/view_16896.html如有疏漏自行修正。  实在抱歉，源码有一点误差：Report_Function.cs 的print_File ()函数内修改为：if (_pgselect != -1)         {             pSize = new PaperSize(page_types[_pgselect] " page", (int)(PreViewPage_Area.Width / 25.4f * 100f), (int)(PreViewPage_Area.Height / 25.4f * 100f)); ..........................    }         else         {             ..............................             pSize = new PaperSize("Custom page", (int)(PreViewPage_Area.Width / 25.4f * 100f), (int)(PreViewPage_Area.Height / 25.4f * 100f));         }换算比例搞成旧的了，横向打印输出打印机打不全了。自己修改下

C# RichTextBox 常用操作(可插入图片/更改字体/获取Rtf Codes)

读取某个目录下的所有图片，并听过 picturebox循环播放