将单元格转换为选中复选框的文本框

I am using mysql and asp.net with c#. I have a grid view which will display dynamically selected table data. I am able to display the data of selected table. In the first column i have added a check box and a Button outside Grid view. When user selects Check box and clicks on button, the selected rows must turn into text boxes. I am able to find the seleted check box, but i'm unable to convert the cells into text boxes. Here's my code:

我用c＃使用mysql和asp.net。我有一个网格视图，它将显示动态选择的表数据。我能够显示所选表格的数据。在第一列中，我添加了一个复选框和一个Grid视图外的Button。当用户选中“复选框”并单击“按钮”时，所选行必须变为文本框。我能够找到选中的复选框，但我无法将单元格转换为文本框。这是我的代码：

     int n = GridView1.HeaderRow.Cells.Count;

    for( int i=0; i < GridView1.Rows.Count;i++)
    {

        GridViewRow row = GridView1.Rows[i];
        bool isChecked = ((CheckBox)row.FindControl("CheckBox1")).Checked;

        {
            for( int j=0;j<n;j++)
            {
                TextBox txt = ((TextBox)GridView1.Rows[i].Cells[j]).Text;

            }
        }
    }

At this line: TextBox txt = ((TextBox)GridView1.Rows[i].Cells[j]).Text; i get a warning : cannot convert 'System.Web.UI.Controls.TableCell' to type 'System.Web.UI.Controls.TextBox I am unable to resolve this. Please help. Thank you

在这一行：TextBox txt =（（TextBox）GridView1.Rows [i] .Cells [j]）。Text;我得到一个警告：无法将'System.Web.UI.Controls.TableCell'转换为'System.Web.UI.Controls.TextBox'我无法解决此问题。请帮忙。谢谢

2 个解决方案

#1

Try this.

尝试这个。

You can remove one or few lines based on your hands-on with C#.

您可以根据自己动手使用C＃删除一行或几行。

Concept is, you should create a TextBox, assign cell text that textbox and then Add that newly created textbox to child controls of Grid Cell of particular row.

概念是，您应该创建一个TextBox，分配文本框的单元格文本，然后将新创建的文本框添加到特定行的Grid Cell的子控件。

Mark this solution if you found useful.

如果您觉得有用，请标记此解决方案

    bool isChecked = ((CheckBox)row.FindControl("CheckBox1")).Checked;
    if(isChecked)
    {
        for( int j=0;j<n;j++)
        {
            TextBox tbForCell = new TextBox();
            tbForCell.Text = GridView1.Rows[i].Cells[j].Text;
            GridView1.Rows[i].Cells[j].Text = "";
            GridView1.Rows[i].Cells[j].Controls.Add(tbForCell);
        }
    }

If you want to avoid the TextBox to appear in CheckBox Column please initialise loop variable j with 1 instead of 0.

如果要避免TextBox出现在CheckBox列中，请使用1而不是0初始化循环变量j。

        for( int j=1;j<n;j++)

#2

Your method call is finding the cell. The Textbox is a control contained within the cell. Try something like this instead:

您的方法调用是查找单元格。文本框是单元格中包含的控件。尝试这样的事情：

TextBox txt = ((TextBox) GridView1.Rows[i].Cells[j].FindControl("textbox name")).Text;

The FindControl method is documented here.

FindControl方法在此处记录。

Also take @Bartdude's advice about using editable gridviews. If one will work at least as well as what you're trying to hand-roll, it's worth the time learning how to use it.

另请参考@ Bartdude关于使用可编辑网格视图的建议。如果一个人的工作至少和你想要手动滚动的一样好，那么值得花时间学习如何使用它。

#1