problem with dynamicall loaded textbox values

Question

1.00/5 (1 vote)

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Hi,

I have a situation where I need to show data from database to textboxes. These textboxes has to be dynamically created and can be editable. I am able to create textboxes as follows:

C#

string[] myData = liD1.ToArray(); //liD1 is a list that has values from database
public void showData()
{
	for (int i = 0; i < myData.Length; i++)
	{
		if (txtMore.FindControl("txtD1StartTime" + i) == null)
		{
			txtStart1 = new TextBox();
									 
			lblStart1 = new Label();
								   
			txtStart1.ID = "txtD1S" + i;
									 
			lblStart1.ID = "lblD1S" + i;
									  
			txtStart1.Text = myData[i].ToString();
										
			lblStart1.AssociatedControlID = txtStart1.ID;
			
			lblStart1.Text = "Data" + i;
								 
			txtMore.Controls.Add(lblStart1);
			
			txtMore.Controls.Add(txtStart1);
						  
		}
	}
}

In my ascx page, I am loading those textboxes in

as follows:

C#

<ul class="txtMore" id="txtMore"  runat="server">

</ul>

showData() function is loading data with dynamically created textboxes. This is working fine. Now If i edit textboxes and try to get new data, it is not giving me anything. Actually it couldn't even find that control. Code is as shown below:

C#

public void getData()
{
	for (int i = 0; i < myData.Length; i++)
	{
		TextBox t = txtMore.FindControl("txtD1S" + i) as TextBox;
		
		if (t != null)
		{
			string temp = t.Text;
	}
}

Even though I have dynamically loaded textboxes from showData(), in getData(),it is not able to find any control. Please help.

Posted 9-Dec-14 5:30am

Dhyanga

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3 solutions

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Richard Deeming · Answer 1 · 2014-12-09T06:38:00

Solution 3

You will need to re-create the dynamic controls for every request.
How to create controls dynamically in ASP.NET and retrieve values from it[^]

Posted 9-Dec-14 6:38am

Richard Deeming

Comments

Dhyanga 9-Dec-14 14:29pm

I couldn't understand where the SaveViewState is called in that code.

Richard Deeming 9-Dec-14 15:44pm

The SaveViewState and LoadViewState methods are automatically called as part of the ASP.NET page lifecycle.

Dhyanga 9-Dec-14 16:25pm

so Do i need to write those code by myself or do they automatically generated?

Richard Deeming 10-Dec-14 7:08am

You will need to write the code which recreates the controls yourself.

The code which calls SaveViewState and LoadViewState is part of the framework.

Dusara Maulik · Answer 2 · 2014-12-09T07:15:00

Hi,

You should have to use The ASP.NET Repeater Control[^]

For your ready reference see below code:

Aspx page:

HTML

<div>
            <ul>
                <asp:Repeater runat="server" ID="rptTextList" >
                    <ItemTemplate>
                        <li>
                            <asp:Label Text='<%= Eval("Title") %>' runat="server" ID="lblText" />
                            <asp:TextBox runat="server" ID="txtText" Text='<%= Eval("TextData") %>' />
                        </li>
                    </ItemTemplate>
                </asp:Repeater>
            </ul>
        </div>

.cs page:

C#

foreach (RepeaterItem item in rptTextList.Items)
{
    Label lblText = (Label)item.FindControl("lblText");
    TextBox txtText = (TextBox)item.FindControl("txtText");

    Response.Write(txtText.Text + "<br/>");
}

Fayyazq · Answer 3 · 2014-12-09T05:47:00

Solution 1

IDs are changed in page rendering.. you have to use at page directive level. ClientIDMode="Static"

Posted 9-Dec-14 5:47am

Fayyazq

Comments

Dhyanga 9-Dec-14 12:31pm

I added the ClientIDMMode but still same issue. :(