datagridview | 易学教程

DataGridView 添加统计行

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文章有点潦草，不过应该看的懂，，，， 2种方式： ---------------------------------------------------------------------------------------------------------------------------------- 方式一：（数据直接绑定）缺点：列值运输的值直接写死的，如果需要添加写列值，完全需要重写绑定下，就这点有些不好，暂时也就这样弄了；这个希望多交流交流，，，列头排序添加两个事件，点击列头排序定义集合记录排序数 private List<object[]> list_obj = new List<object[]>(); //点击排序 private void dgvSubbill_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e) { if (e.RowIndex >= 0 || this.dgvSubbill.Rows.Count == 0) return; if (list_obj.Count == 0) { colindex = e.ColumnIndex; int RowIndex = this.dgvSubbill.Rows.Count - 1; list_obj.Add((

.NET Winforms BindingNavigator Add and Delete buttons do not work

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问题 On my VS2015 Winforms app, I created a DataGridView along with a BindingNavigator . The following code successfully displays the data in the DataGridView and I can navigate the data rows using the BindingNavigator. But when I try to add/delete a row using builtin Add/Delete buttons on the BindingNavigator the database does not reflect those changes. The Code : public partial class Form2 : Form { public Form2() { InitializeComponent(); } SqlDataAdapter dadapter; DataSet dset; BindingSource bs;

How to sort a DataGridView that is bound to a collection of custom objects?

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问题 So I have been following this guide for data binding on Windows Forms controls (MAD props to the author, this guide is great), and I have used this to create a custom class and bind a DataGridView to a collection of this class: class CompleteJobListEntry { private string _jobName; private Image _jobStatus; private DateTime _jobAddedDate; private string _jobAddedScanner; private string _jobAddedUser; private string _jobLastActivity; private DateTime _jobActivityDate; private string

Using DataTable at DataGridView to display small images(Icon)

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问题 [EDIT] I'd like to use image at Datagridview using DataTable. RadioButton is just a simple question format for this post. Let me clear myself for this. How can I add this "image" or that "image" on the datagridview using the binding style ? (Because, I thought, it is faster then the normal ways. I made 500 lines of images and texts -both of them are 16*16 and short words. If I redraw it, it took me 20 seconds . Twenty !!!! This is a nonsense. I have tried "Double buffer" workarounds, but

Datagridview customization and formatting

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问题 I have a datagrid and a datatable . Values in datagrid came from datable. Now the cell values is in decimal and I want to change the format to 2 decimal places but here's my problem not all cell values is integer also it contain STRING VALUE like N/A . Here's my sample datagrid filled with data: Name | Col1 | Col2 | ----------------------------------------- xxx | N/A | N/A | yyy | 12.1999999 | 23.012355 | zzz | 0.12366666 | 12.357878 | I already tried datagrid.columns(1).DefaultCellStyle

DataSet and DataGridView Datasource binding

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问题 I have linked my DataGridView with a DataSet with all the values from one of my database tables. But what i want to do is filter my DataGridView to display certain values from my DataSet: For example: (Where EmployeeID = 4) , is there any way of doing this without changing my initial binding object? //Initial datasource dgv.DataSource = DataSet1.Table[0]; //Some filter code here to display DataSet1 where employeeID = 1 //Show these results in the dgv without changing the initial binding. 回答1:

dataGridView添加列行

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//全局设置文本对齐方式。 dataGridView1.RowsDefaultCellStyle.Alignment= DataGridViewContentAlignment.MiddleCenter; 添加列时，必须设置列的CellTemplate，否则应该报错！一、只添加text样式 1 //每一列必须设置CellTemplate 2 //第一列 3 dataGridView1.Columns.Add(new DataGridViewColumn() {Name="name", HeaderText = "姓名", Width = 100,CellTemplate = new DataGridViewTextBoxCell(), MinimumWidth=100}); 4 5 6 //第二列 7 DataGridViewColumn ageColumn = new DataGridViewColumn() 8 { 9 Name = "age", 10 HeaderText = "年龄", 11 Width = 100, 12 CellTemplate = new DataGridViewTextBoxCell() 13 }; 14 //设置文本对齐方式 15 ageColumn.DefaultCellStyle.Alignment =

DataGridViewColumn initial sort direction

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问题 I'm working in VS2008 on a C# WinForms app. By default when clicking on a column header in a DataGridView it sorts that column Ascending, you can then click on the column header again to sort it Descending. I am trying to reverse this, so the initial click sorts Descending then the second click sorts Ascending and I haven't been able to figure out how to do this. Does anyone know? Thanks 回答1: You can set the HeaderCell SortGlyphDirection to Ascending, and then the next click will give you the

C#简易电影记录管理系统:完结篇[权限分配]

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本期概述上一期,我们实现了简单的数据恢复(通过先前备份的Excel数据文件导入Sql Server来恢复数据);这期我们来一起学习下针对普通用户的权限分配功能(看看管理员是如何给普通用户进行权限分配的). 原理在登录窗体类中创建一个全局变量FRight, 用来获取用户成功登录后的功能权限值, 权限值等于1为功能可用,0或者其它为不可用;当普通用户成功登录后,在主窗体FrmMain里获取这个全局变量,同时将相应的功能按钮的Enable属性设置为true或者false(这里管理员默认是拥有所有功能权限,系统只判断普通用户的功能权限);这里创建了一个FrmUserManager普通用户管理窗体(仅限于管理员使用),用于管理员创建普通用户以及修改普通用户账户信息和分配权限等(管理员本身信息只能被查看,不能被做任何修改).关于权限分配的实现,这里使用了CheckBox控件,通过判断CheckBox的Checked属性是否被点中来给普通用户赋予相应的功能权限,被点中则赋值1,否则默认为0,然后通过执行sql数据操作将权限值存入数据库. 数据库设计这里由于增加了普通用户权限值,我们需要对数据库结构稍作修改.这里在MovieAccount表中增加4列内容分别用于 RightFManager 判断普通用户管理界面权限 RightFRegistration 判断普通用户注册权限

Not Changeable Row number column in datagridview

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问题 I want to extend a dategridview with a (read only) column just for row number. The ROW NUMBER row`s order should not change when datagridview sort by other column content (Like excel)! is possible? 回答1: We can enumerate each row in one of two ways: Adding a new column. Within the row header. Displaying in Added Column private void AddIndexCol() { DataGridViewTextBoxColumn col = new DataGridViewTextBoxColumn(); col.Name = "Index"; col.HeaderText = "Index"; col.ReadOnly = true; col.AutoSizeMode