动态添加多个按钮并在点击时填充PlaceHolder [英] Add Multiple Button's Dynamically and populate PlaceHolder on clicking

问题描述

亲爱的朋友们，



我正在创建多个列，动态地在asp页面的每一列中都有一个按钮。

但是，如何点击生成这些多个按钮的事件。



例如：我用户输入了3列并提交了它，然后将添加三列，其中一个按钮和一个在每一栏中放置持有人。现在，当用户点击该按钮时，我想要一些文本框添加到备受尊重的地方持有人。



请帮帮我朋友,,, ，





我在下面的代码中做了什么,,,



但是当我点击动态创建的按钮时，所有动态添加的按钮都消失了。

Dear friends,

I am creating multiple columns with one button in each column in asp page dynamically.
But, how click event of these multiple button is generated.

For example: I user entered 3 columns and submit it,Then three columns will be added with one "button" and one "Place Holder" in each column.Now I want when user click on that button ,Some text boxes added to the respected Place Holder.

Please help me friends,,,,


What I did is in the code below,,,

but When I click on dynamically created button ,,All dynamically added button getting disappeared.

protected void common_click(object sender,EventArgs e)
    {
             
        int cellCtr;
        // Current cell counter
        int cellCnt;
        int btnId=1;
        int phId=1;
       
        cellCnt = int.Parse(TextBox1.Text);

        for (cellCtr = 1; cellCtr <= cellCnt; cellCtr++)
            {
                // Create a new cell and add it to the row.
                HtmlTableCell tCell = new HtmlTableCell();
                RowMain.Cells.Add(tCell);

                PlaceHolder ph = new PlaceHolder();
                Button btn = new Button();
                btn.ID = "btn" + btnId;
                btn.Text = "AddControls";
                btn.Click += new EventHandler(btn_Click);
                ph.ID = "ph" + phId;

                tCell.Controls.Add(btn);
                tCell.Controls.Add(ph);
                TextBox txt = new TextBox();
                ph.Controls.Add(txt);
                btnId = btnId++;
                phId = phId++;
                
            }
        
    }

    void btn_Click(object sender, EventArgs e)
    {
        Button isButton1 = (Button)sender;
        string test = isButton1.ID;
        Response.Write("Was it Button1 = " + test );

        
        //Here I want to add some controls to the particular place holder.
    }

推荐答案

如何生成这些多按钮的点击事件。

创建按钮时，向其添加事件处理程序，然后在页面中处理相同的事件。



示例：

how click event of these multiple button is generated.
When you create a button, add the event handler to it and then handle the same event in your page.

Example:

Button btn1 = new Button();
btn1.ID = "btnONE";
btn1.Text = "Press Me";
btn1.Click += new EventHandler(btn1_Click);
MyPlaceHolder.Controls.Add(btn1);

同一页面的某个地方：

Somewhere in the same page:

void btn1_Click(object sender, EventArgs e)
{
    // Handle the event. Do your stuff.
}

查看我已更改的代码。

Take a look in the code i have changed.

protected void common_click(object sender,EventArgs e)
    {
             
        int cellCtr;
        // Current cell counter
        int cellCnt;
        int btnId=1;
        int phId=1;
       
        cellCnt = int.Parse(TextBox1.Text);

        for (cellCtr = 1; cellCtr <= cellCnt; cellCtr++)
            {
                // Create a new cell and add it to the row.
                HtmlTableCell tCell = new HtmlTableCell();
                

                PlaceHolder ph = new PlaceHolder();
                Button btn = new Button();
                btn.ID = "btn" + btnId;
                btn.Text = "AddControls";
                btn.Click += new EventHandler(btn_Click);
                ph.ID = "ph" + phId;

                ph.Controls.Add(btn);
                tCell.Controls.Add(ph);
                RowMain.Cells.Add(tCell);
                btnId = btnId++;
                phId = phId++;
                
            }
        
    }

    void btn_Click(object sender, EventArgs e)
    {
        Button isButton1 = (Button)sender;
        string test = isButton1.ID;
        Response.Write("Was it Button1 = " + test );

        //Here I want to add some controls to the particular place holder.
    }

可能是您在上一个按钮的顶部添加了按钮？确保将它们彼此远离或并排放置。

It could be that you are adding buttons on top of the previous buttons? Make sure to position them away from each other or side by side.

这篇关于动态添加多个按钮并在点击时填充PlaceHolder的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！