如何从gridview获取从后面的代码动态创建的文本框值？ [英] How can I get textbox value from gridview which dynamically created from code behind ?

问题描述

Hello Friends，



我正在创建一个应用程序，我有一个问题，请帮助我们。



我正在使用c＃后面的代码在gridview中创建短信文本框。

和行数和列数取决于一个下拉列表，因此数字和列会有所不同。现在在gridview非常细胞创建文本框。

我得到了解决方案。如何为此创建文本。

以下是代码

Hello Friends,

I am creating one application and I have one problem, Please help me guys.

I am creating texting textbox in gridview from code behind c#.
and number of rows and columns are depend on one dropdown so number and columns will vary. Now in gridview very cell create textbox.
I got solution for this. How to create text for this.
following is code

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
               for(int i =0; i < e.Row.Cells.Count; i++)
                {
                    TextBox txt = new TextBox();
                    e.Row.Cells[i].Controls.Add(txt);
                }
            }
        }

现在我将在每个单元格的每个文本框中添加一些值gridview和我想将所有值保存到数据库。

我尝试了以下代码，

Now i will add some values in every textbox of every cell of gridview and I want to save thease all values to database.
I tried some code as follows,

protected void btnSave_Click(object sender, EventArgs e)
{
   for (var row = 0; row < GridView1.Rows.Count; row++)
    {
       for (int col = 0; col < GridView1.Rows[row].Cells.Count; col++)
         {
           TextBox txt = (TextBox)GridView1.Rows[row].Cells[col].Controls[0];
           string texboxvalue= txt.Text;

         }
    }

}

但是我没有从文本框中获取数据而且这个代码给出如下任何例外

But I am not getting data from textbox and it this code giving any exception as follows

"Specified argument was out of the range of valid values.
Parameter name: index"

所以请帮我解决这个问题问题。



我的尝试：

So please help me to solve this problem.

What I have tried:

protected void btnSave_Click(object sender, EventArgs e)
{
   for (var row = 0; row < GridView1.Rows.Count; row++)
    {
       for (int col = 0; col < GridView1.Rows[row].Cells.Count; col++)
         {
           TextBox txt = (TextBox)GridView1.Rows[row].Cells[col].Controls[0];
           string texboxvalue= txt.Text;

         }
    }

}

推荐答案

试试这个，

它可能会对你有所帮助。



创建唯一 <$ c的ID $ c> TextBox 控制如下

和回复我们可以使用Request.Form [ ^ ]对象获取特定文本框的值，我们可以使用它来查询文本框的名称属性。

Try this,
It might help you.

Create unique Id for the TextBox Control as below
and in the post back we can use Request.Form [^] object to get the values of the particular text boxes, which we can query using the name attribute of the Textbox.

int i = 0;
     protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
       {

           if (e.Row.RowType == DataControlRowType.DataRow)
           {
               TextBox txt = new TextBox() { ID = "txtDynamic" + i++ };
               e.Row.Cells[0].Controls.Add(txt);

           }
       }

       protected void btnSave_Click(object sender, EventArgs e)
       {

           var Column1TextBoxes = Request.Form.AllKeys.Where(k => k.Contains("txtDynamic")).ToList();
           for (int i = 0; i < Column1TextBoxes.Count; i++)
           {
               string value = Request.Form[Column1TextBoxes[i]]; // Textbox values
           }
       }

同样，您可以在运行时创建多个控件，并使用控件的名称获取值。



注意： 回发之后你必须重新绑定 GridView 使用更新的值，否则您将无法保留数据。

Similarly you can create multiple controls on run time and get the values by using the name of the controls.

Note: After Postback you will have to rebind the GridView with the updated values, else you wont be able to retain the data.

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