visual studio web developer

Question

1.00/5 (1 vote)

See more:

i write some text in textbox.i want to click (add)one button ,then create one link button with textbox value at the same form.and,i write some text in same textbox, again click (add) same button then create another link button .with textbox value.advance thanks ....

Posted 7-Oct-12 23:50pm

sarathtamil

Add a Solution

2 solutions

Solution 2

You can place a placeholder in your aspx file and add linkButtons to it Dynamically. But since you are adding linkButtons dynamically and during a button click event they will be gone in the next postback. You have to manually retain/re-add the linkButtons in each postback. I have used Viewstate in this sample.

HTML Code:

<asp:textbox id="txtLinkText" runat="server" ></asp:textbox>
    <asp:button id="btnAddLink" runat="server" text="Add"
        onclick="btnAddLink_Click" /></asp:button>
    <asp:placeholder id="placeHolderLinks" runat="server">
        
    </asp:placeholder>

Code Behind:

C#

protected void Page_Load(object sender, EventArgs e)
       {
           if (ViewState["LinkButtonTextList"] != null)
           {
               List<string> LinkButtonTextList = (List<string>)ViewState["LinkButtonTextList"];
               foreach (string lnkText in LinkButtonTextList)
               {
                   LinkButton lnkDynamic = new LinkButton();
                   lnkDynamic.Text = lnkText;
                   lnkDynamic.Click += lnkDynamic_Click;
                   placeHolderLinks.Controls.Add(lnkDynamic);

               }
           }
       }

       protected void btnAddLink_Click(object sender, EventArgs e)
       {
           if (txtLinkText.Text != "")
           {
               LinkButton lnkDynamic= new LinkButton();
               lnkDynamic.Text = txtLinkText.Text;
               lnkDynamic.Click += lnkDynamic_Click;
               placeHolderLinks.Controls.Add(lnkDynamic);

               List<string> LinkButtonTextList;
               if (ViewState["LinkButtonTextList"] == null)
                   LinkButtonTextList = new List<string>();
               else
                   LinkButtonTextList = (List<string>)ViewState["LinkButtonTextList"];
               LinkButtonTextList.Add(txtLinkText.Text);
               ViewState["LinkButtonTextList"] = LinkButtonTextList;
           }
       }

       protected void lnkDynamic_Click(object sender, EventArgs e)
       {
              //Do Work();
       }

Hope this helps.

if you do not understand why we have to re-add the controls
this article[^] is a great place to start.

Posted 8-Oct-12 0:46am

TheCoolCoder

Updated 8-Oct-12 1:02am

v6

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Mohd. Mukhtar · Accepted Answer · 2012-10-08T00:20:00

Hi,

Use the below code in on click method of the button.

HTML Code :

XML

<body>
    <form id="form1" runat="server">
    <div>
<asp:textbox id="txtBox" runat="server" xmlns:asp="#unknown"></asp:textbox>
        <asp:Button ID="AddControlButton" runat="server" Text="Add Control"
            onclick="AddControlButton_Click" />
        <br />
        <asp:PlaceHolder ID="DynamicControlsHolder" runat="server"></asp:PlaceHolder>
        <br />
        <br />
    </div>
    </form>
</body>

Code behind file code :

C#

protected voin AddControlButton_Click(object sender, EventArg e)
{
   string str = textbox.Text;
   LinkButton lnkBtn = new LinkButton();
   lnkBtn.Id = "lnkBtn"+str;
   lnkBtn.Text = str;
   //Add some other prpertry of link button.
   
}

Hope this will help you.