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25 Jan

For all sizing enumerations, values with names that refer to displayed cells limit their calculations to cells in displayed rows.

With these values, you can limit which cells are used to calculate the preferred sizes.

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Data Grid View控件 Data Grid View是用于Windows Froms 2.0的新网格控件。它可以取代先前版本中Data Grid控件,它易于使用并高度可定制,支持很多我们的用户需要的特性。 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,某些问题会由于知识点的关联性重复出现在多个章节。这些问题、答案及其附带的示例代码都包含在本文档的附录部分。 内容 1 何为Data Grid View.. Excluding rows is useful to avoid a performance penalty when you are working with a large quantity of rows.

For example, if you call the Auto Resize Rows(Data Grid View Auto Size Rows Mode, Boolean) overload of the Auto Resize Rows method and pass in a value of false for the Boolean parameter, the overload will calculate the ideal heights and widths for cells in the row, but it will adjust the row heights only.

You can customize sizing behaviors when working with derived Data Grid View cell, row, and column types by overriding the Data Grid View Cell. The protected resizing method overloads are designed to work in pairs to achieve an ideal cell height-to-width ratio, avoiding overly wide or tall cells.

Cancel = True else 'here I was thinking on something like Data Grid View Text Box Column7.value = 60 and so on, but none of this works.

That work is pretty much what has to get implemented here.

Auto Resize Row(0, Data Grid View Auto Size Row Mode. Auto Resize Rows() c,临时的,让行头和列头自动调整 // 列头高度自动调整 Data Grid View1. Context Menu Strip3; // 单元格的 Context Menu Strip 设定Data Grid View1[0, 0]. Context Menu Strip4;对于单元格上的右键菜单的设定,优先顺序是: Cell Data Grid View⇒ Cell Context Menu Strip Needed、Row Context Menu Strip Needed 事件利用 Cell Context Menu Strip Needed 事件可以设定单元格的右键菜单,尤其但需要右键菜单根据单元格值的变化而变化的时候。比起使用循环遍历,使用该事件来设定右键菜单的效率更高。但是,在Data Grid View使用了Data Source绑定而且是Virtual Mode的时候,该事件将不被引发。[C#]// Cell Context Menu Strip Needed事件处理方法private void Data Grid View1_Cell Context Menu Strip Needed(object sender, Data Grid View Cell Context Menu Strip Needed Event Args e)同样,可以通过 Row Context Menu Strip Needed 事件来设定行的右键菜单。[C#]// Row Context Menu Strip Needed事件处理方法private void Data Grid View1_Row Context Menu Strip Needed(object sender, Data Grid View Row Context Menu Strip Needed Event Args e) Cell Context Menu Strip Needed 事件处理方法的参数中、「e. Row Index=-1」表示列头。Row Context Menu Strip Needed则不存在「e. Row Index=-1」的情况。________________________________________⑮ Data Grid View 的单元格的边框、网格线样式的设定1) Data Grid View 的边框线样式的设定Data Grid View 的边框线的样式是通过 Data Grid View. Right = _ Data Grid View Advanced Cell Border Style. Cell Parsing 事件可以设定用户输入的值。下面的示例:当输入英文文本内容的时候,立即被改变为大写。[C#]//Cell Parsing 事件处理方法private void Data Grid View1_Cell Parsing(object sender, Data Grid View Cell Parsing Event Args e) ________________________________________⑱ Data Grid View 新加行的默认值的设定 需要指定新加行的默认值的时候,可以在Data Grid View.

All Cells); //让 Data Grid View1 的第一行的行高自动调整一下。 Data Grid View1. Bottom = _ Data Grid View Advanced Cell Border Style. Inset Double 同样,设定行头单元格的属性是: Advanced Row Headers Border Style, 设定列头单元格属性是:Advanced Column Headers Border Style。________________________________________⑯ Data Grid View 单元格表示值的自定义通过Cell Formatting事件,可以自定义单元格的表示值。(比如:值为Error的时候,单元格被设定为红色)下面的示例:将“Colmn1”列的值改为大写。[C#]//Cell Formatting 事件处理方法private void Data Grid View1_Cell Formatting(object sender, Data Grid View Cell Formatting Event Args e) Cell Formatting事件的Data Grid View Cell Formatting Event Args对象的Value属性一开始保存着未被格式化的值。当Value属性被设定表示用的文本之后,把Formatting Applied属性做为True,告知Data Grid View文本已经格式化完毕。如果不这样做的话,Data Grid View会根据已经设定的Format,Null Value,Data Source Null Value,Format Provider属性会将Value属性会被重新格式化一遍。________________________________________⑰ Data Grid View 用户输入时,单元格输入值的设定通过 Data Grid View.

I have a Data Grid View with a Date (Date Time) Column. When a user edit the cell and change the date I woulk like to allow him to write "081501" and programmatically transform the entered date to "2008/15/01"( using a custom method *called Transform Date(string ARaw Date)) But I can't find any Data Grid View event to call the Transform Date method and replace the user input by the computed value. Does anybody if this kind of transformation *is possible in a Data Grid View and Where is the best place to put the call to the transformation method ? In the following example, the data is stored as 75000 but the user wants the data displayed as "75k" instead.

I have a Data Grid View with a Date (Date Time) Column. Check out the Format and Parse events on the cells.