In this case, you need to add a Combo Box to the cells in the desired column.
The following code snippet adds a Combo Box control to the fifth column of the Data Grid View control: '---add columns to the Data Grid View control--- Data Grid View1.
How to efectively validate data entry inside a Data Grid View. Late Validation: This validation is performed after the user is done entering data.
Well, after doing some research and a bit of trial and error, found out a couple of approaches. For the specific project i was working in, it was the perfect choice.
On the other hand, if the user is required to enter data in all the rows and the validation is simple; the first approach is convenient.
In order to implement Immediate validation, the event Cell Validation must be handled Ex The validation to check if the cell is in edit mode is very important. For the Late Validation, there must be an event that is perform once the user finish entering data.
Also this approach allows the user more flexibility.
Data Grid View控件 Data Grid View是用于Windows Froms 2.0的新网格控件。它能够代替先前版本号中Data Grid控件，它易于使用并高度可定制，支持许多我们的用户须要的特性。 关于本文档： 本文档不准备面面俱到地介绍Data Grid View，而是着眼于深入地介绍一些技术点的高级特性。 本文档按逻辑分为5个章节，首先是结构和特性的概览，其次是内置的列/单元格类型的介绍，再次是数据操作相关的内容，然后是主要特性的综述，最后是最佳实践。 大部分章节含有一个“Q & A”部分，来回答该章节相关的一些常见问题。注意，某些问题会因为知识点的关联性反复出如今多个章节。这些问题、答案及其附带的演示例子代码都包含在本文档的附录部分。 内容 1 何为Data Grid View.. With these values, you can limit which cells are used to calculate the preferred sizes.
From the previous posts, i know you are creating a custom grid control, and this is good because this solution also requires you to hold a dictionary of strings. Text property of a cell is just available in the Cell Formatting event and in the Row Formatting event, Please take a look at the following example: C# The idea here is to hold a dictionary with the column header text as the key and the largest string on that column as the value, and setting the minimum width on the column based on that value. Best Regards, Emanuel Varga I forgot about the Data Binding Complete event in my previous example, where you first add the header texts to the dictionary, here is the complete code with a fixed min max width for all the columns: again, C# Thank you for following up. So any tips for how to write all of this code quickly would be appreciated.)The first thing I am trying to do is figure out what the maximum width is that I am shooting for.
My biggest concern in just looking at the code is performance. And at least like that you can provide an interface for the user to customize the grid based on his/her needs, and use a Save / Load layout to load the settings for the grid, usually more customizations =Wow.
This event is fired when the user tries to edit the Combo Box control: Private Sub Data Grid View1_Editing Control Showing( _ By Val sender As Object, _ By Val e As System. Editing Control Showing Dim combo Box Column As Data Grid View Combo Box Column = _ Data Grid View1.
Hello Deborah, I have a solution for you, but it's not a clean one, but it will work in all possible cases, and you don't have to use that complicated calculation function, but I'm not sure if it's the cleanest way to do things, but it will work. An awful lot of work for something that already works this way in the Data Grid View that somes with Visual Studio. (I have two weeks to finish the application and can't afford to spend 1 week of it getting the grids to work correctly.