link button inside html table cell asp.net

Question

Hi i am dynamically creating link buttons as shown below. the problem is how to add the link button in the place of "linktopage". currently the link button is added below the table.

for(i=0;i<100;i++)
{
LinkButton lnk = new LinkButton();
lnk.ID = "lnk" + i;
lnk.Text = "open profile";
lnk.Click += new System.EventHandler(lnk_click);
this.Page.Form.Controls.Add(lnk);

htmlstring += "<tr style='height:30px;'>" +
              "<td>" + firstname + "</td>" +
              "<td>" + surname + "</td>" +
              "<td>" + email + "</td>" +
              "<td>" + mobile + "</td>" +
              **"<td>" + linktopage + "</td>" +**
              "</tr>";
                  }

i just added it as dummy placeholder. actually i want the linkbutton to be added there. for example it should be rendered as first name, surnmae,email,mobile,htmllink — sam
– sam, Commented May 24, 2011 at 11:26
so, your linktopage is an action page, like, executing a page, or executing a command? Do you want this to be synchronously or asynchronously? — balexandre
– balexandre, Commented May 24, 2011 at 11:31
actually i want to call a c# method which does some operation and redirects to another page. — sam
– sam, Commented May 24, 2011 at 11:34
then, that's the normal behavior of a POST, if you use the Command instead Click event you can even pass variables to your method — balexandre
– balexandre, Commented May 24, 2011 at 11:40

balexandre · Accepted Answer · 2011-05-24 12:17:18Z

from your comments

in .aspx.cs

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
            Populate();
    }

    private void Populate()
    {
        List<MyTableData> list = new List<MyTableData>();

        for (int i = 0; i < 10; i++)
        {
            list.Add(
                new MyTableData()
                {
                    FirstName = "Firstname " + i.ToString(),
                    LastName = "Lastname " + i.ToString(),
                    Email = "Email " + i.ToString(),
                    Mobile = "Mobile " + i.ToString(),
                    CmdArgument = i.ToString()
                });
        }

        gv.DataSource = list;
        gv.DataBind();
    }

    protected void lnkBtn_Command(object sender, CommandEventArgs e)
    {
        string btnNumber = e.CommandArgument.ToString();

        // more code...

        lit.Text = "Button pressed <b>" + btnNumber + "</b>";
    }
}

public class MyTableData
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Email { get; set; }
    public string Mobile { get; set; }
    public string CmdArgument { get; set; }
}

in .aspx

<div>
    <asp:GridView ID="gv" runat="server" AutoGenerateColumns="False" CellPadding="5">
        <Columns>
            <asp:BoundField DataField="FirstName" HeaderText="First name" />
            <asp:BoundField DataField="LastName" HeaderText="Last name" />
            <asp:BoundField DataField="Email" HeaderText="Email" />
            <asp:BoundField DataField="Mobile" HeaderText="Mobile" />
            <asp:TemplateField HeaderText="">
                <ItemTemplate>
                    <asp:LinkButton ID="lnkBtn" runat="server" OnCommand="lnkBtn_Command" CommandArgument='<%# Eval("CmdArgument") %>'
                        Text='<%# Eval("CmdArgument", "Button {0}") %>' />
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>
</div>
<hr />
<asp:Literal ID="lit" runat="server" />

the result is

enter image description here

Source Code available

@balexandre-thanks a lot. I will implement this and get back to you.

Kamran Khan · Accepted Answer · 2011-05-24 11:33:11Z

0

How about:

Replacing **"<td>" + linktopage + "</td>" +**, with <td><asp:Panel id="lnktoPage" /></td> And add it from the code, lnktoPage.Controls.Add(lnk);

Note that Panel renders as DIV on client side.

Or... you can create the html link dynamically:

string strID = "someID";
string strLink = @"<a id=""" + strID + @"" +
                @" onclick="" " + lnk_clickMethodName + @" "" " +
                @"href=""http://www.w3schools.com"">Visit W3Schools.com!</a>";

So, your final method would look something like:

for (int i = 0; i < 100; i++)
{
    string strID = "lnk" + i.ToString();
    string strLink = @"<a id=""" + strID + @"" +
                    @" onclick="" " + lnk_clickMethodName + @" "" " +
                    @"href=""http://www.w3schools.com"">Visit W3Schools.com!</a>";
    StringBuilder html = new StringBuilder();

    html.Append(@"<tr style='height:30px;'>");
    html.Append(@"<td>" + firstname + "</td>");
    html.Append(@"<td>" + surname + "</td>");
    html.Append(@"<td>" + email + "</td>");
    html.Append(@"<td>" + mobile + "</td>");
    html.Append(@"<td>" + strLink + "</td>");
    html.Append(@"</tr>");
}

edited May 24, 2011 at 11:33

answered May 24, 2011 at 11:17

Kamran Khan

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1 Comment

sam Over a year ago

i m getting this error Operator '+' cannot be applied to operands of type 'string' and 'void'

Rob · Accepted Answer · 2012-08-10 07:44:08Z

0

instead of link button, use href tag; it will be easy.....

edited Aug 10, 2012 at 7:44

Rob

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answered May 24, 2011 at 11:18

vasmay

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1 Comment

sam Over a year ago

i used this code <a href="<%#MetthodToCall(); %>">Call C# Method</a> but no luck

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