窗口形式，数据网格视图 [英] window form ,datagrid view

问题描述

我有一个Form，它正在计算和显示我正在使用的TexBox es中的数据，用于进一步计算，现在在保存Button Click上，我有这段书面代码:

I have a Form which is calculating and displaying data in TexBoxes which I''m using for further calculation, now on Save Button Click I have this written code:

DataTable dt = new DataTable();
DataRow drow  = dt.NewRow();
DataColumn dc = new DataColumn("X", typeof(System.String));
DataColumn dc1 = new DataColumn("Y", typeof(System.String));
DataColumn dc2 = new DataColumn("Z", typeof(System.String));
dt.Columns.Add(dc);
dt.Columns.Add(dc1);
dt.Columns.Add(dc2);
string[] rows = { "" + textBox10.Text, "" + textBox11.Text, "" + textBox12.Text };
dt.Rows.Add(rows);
dataGridView1.DataSource = dt;

一切正常，只是我希望每次将值保存到新行时都保存而不覆盖先前的行，如:
r1 11 111 111
r2 22 11 1111
...
etc

It is working fine except that I want on save each time value gets saved to new row without overwriting the previous like:
r1 11 111 111
r2 22 11 1111
...
etc

推荐答案

为此，您必须在每次保存单击时在同一表上创建新行".
在这里，您每次单击都将创建一个新表，新表将始终只有1条记录.
仅创建一次表，然后在每次单击时向其中添加行. :)

For that you have to "create new row on same table" on each save click.
Here, you are creating new table on every click, new table will always have only 1 record.
Create table only once and then add rows to it on every click. :)

我认为您已经在保存按钮点击中编写了完整的代码，您应该按照以下方式定义代码

1. gollbally定义此变量

DataTable dt;

2.在form_Load事件中

dt = new DataTable();< br/>
DataColumn dc =新的DataColumn("X"，typeof(System.String));

DataColumn dc1 =新的DataColumn("Y"，typeof(System.String));

DataColumn dc2 =新的DataColumn("Z"，typeof(System.String));

dt.Columns.Add(dc);

dt.Columns.Add(dc1);

dt.Columns.Add(dc2);

3.在保存"按钮中单击

DataRow drow = dt.NewRow();

Hi,

I think you had written whole code inside Save button click, you should have to define code on following manner

1. define this variable gollbally

DataTable dt;

2. in form_Load event

dt = new DataTable();<br/>
DataColumn dc = new DataColumn("X", typeof(System.String));

DataColumn dc1 = new DataColumn("Y", typeof(System.String));

DataColumn dc2 = new DataColumn("Z", typeof(System.String));

dt.Columns.Add(dc);

dt.Columns.Add(dc1);

dt.Columns.Add(dc2);

3. in Save button click

DataRow drow = dt.NewRow();

string[] rows = { "" + textBox10.Text, "" + textBox11.Text, "" + textBox12.Text };
dt.Rows.Add(rows);

BindGrd();
4. BindGrid()

公共无效dataGridView1.DataSource = dt;

BindGrd();
4. BindGrid()

public void dataGridView1.DataSource = dt;

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