c ++/cli dataGridView单元格 [英] c++/cli dataGridView cells

问题描述

伙计们.抱歉打扰您，但我需要一点帮助.
我有一个非常简单的dataGridView控件(4列，其中3列为只读).
我需要:
1)防止用户在第3列上输入0和自然数(1到20)以外的字符.当前，其格式设置为数字，十进制零，但可以接受任何内容，包括空格.
2)在DGV首次打开时，将第0行，第3列作为选定的单元格，因此用户可以立即开始输入信息.到目前为止，

Hi, guys. Sorry to bother you, but I need a little help.
I have a very simple dataGridView control (4 columns, 3 of them read-only).
I need:
1) to keep users from entering characters other than 0 and natural numbers (1 to 20) on column 3. Currently, it''s formatted as numeric, zero decimals, but accepts anything, including spaces.
2) to have row 0, column 3 as the selected cell when the DGV first opens, so the user can start entering information right away. So far,

this->dataGridView1->ClearSelection();
         this->dataGridView1->Rows[0]->Cells[3]->Selected = true;

不起作用.
非常感谢您的帮助.非常感谢您！

are not working.
I''d appreciate your help. Thank you very much!

推荐答案

由于只有几次按键操作对单元格值有害，因此我添加了

Since only a few keystrokes were harmful to the cell value, I added a

CellValueChanged

事件.然后过滤掉只读列并进行字符串到整数的转换.之后，我加入了一个try/catch块来处理

event. Then filtered out the read-only columns and made a string-to-integer conversion. After that, I included a try/catch block to take care of the

FormatException^

，并过滤掉超出所需范围(0到20)的数字以及包括加号.不是火箭科学，但工作就完成了！

and filtered out both the numbers outside the desired range (0 to 20) and the values that included the plus sign. Not rocket science, but it got the job done!

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