如何动态地向DataGridview添加数据？ [英] how to add data dynamically to DataGridview?

问题描述

我想动态地将数据添加到 DataGridView 并编写此代码。

I want to add data dynamically to DataGridView and I write this code.

private void btnsubmit_Click(object sender, EventArgs e)
        {
            DataTable table = new DataTable();
            table.Columns.Add("pname".ToString());
            table.Columns.Add("pprice".ToString());
            table.Columns.Add("pq".ToString());
            DataRow dr = table.NewRow();
            dr["pname"] = cmbpname.Text;
            dr["pprice"] = txtpprice.Text;
            dr["pq"] = txtpqu.Text;

            table.Rows.Add(dr);
            var bindingSource = new BindingSource();
            bindingSource.DataSource = table;
            dataGridView1.DataSource = bindingSource;
            bindingSource.ResetBindings(true);
                    
        }

但是每当我点击提交按钮时，前一个值都会被删除并插入新值，但我想要输入所有值而不会丢失先前的值。建议解决我的问题的一些解决方案谢谢：）

But whenever I click on submit button previous value get removed and new value inserted but I want to enter all value without losing previous value. Suggest some solution to solve my problem thanks :)

推荐答案

在每个按钮上单击，您将创建一个新的 DataTable 将其绑定到 DataGridView 。相反，检查网格是否已存在数据源，如果是，则向其添加新行。

On each button click, you are creating a new DataTable to bind it to the DataGridView. Instead, check if a datasource already exists for the grid and if yes, add a new row to it.

您好，



出现问题的原因是每按一次按钮，新的 DataTable 就会创建，因此所有以前的数据都会永久删除。我建议你在submitbutton_click事件之外声明并定义 DataTable 。并将 DataTable 设为 static 。



谢谢

animesh

Hello ,

The problem occurs because for every button click , a newly DataTable creates and hence all the previous data removes permanently . I suggest you to declare and define the DataTable outside of submitbutton_click event . and make the DataTable as static .

thanks
animesh

您必须在现有数据表中添加新行，而不是创建每增加一个新行，请检查一下：

在ASP.Net-GridView-Control-with-TextBoxes.aspx中添加动态行 - [ ^ ]

You have to add new row to the existing datatable, not creating new one at every add new row, check this out:
Adding-Dynamic-Rows-in-ASP.Net-GridView-Control-with-TextBoxes.aspx[^]

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