Dynamically created textboxes not updating

Merajuddin Ansari

10y1.7k.NET

Hi,
i have asp.net web application in which i used to generate list of text boxes depend on count in table dynamically.however whenever I load the details I am getting the same output in the TextBox every time.

please help.

after generating all controls(TextBox,dropdownlist etc) i am doing this below

TextBox txtRes1 = (TextBox)PlaceHolder1.FindControl("id1");
txtRes1.Text= concat(value1, valu2);

public int concat(strin v1, string v2)
{
return v1+v2;
}

11 Replies

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Merajuddin Ansari10y ago

Thanks guys. i got the solution for this by creating a TextChanged event of a textbox in which i wanted to put the new changed value.   protected void TextBox1_TextChanged(object sender, EventArgs e) { string endDate = Request.Form[((TextBox)PlaceHolder1.FindControl("tb1")).UniqueID];                                     string startDate = Request.Form[((TextBox)PlaceHolder1.FindControl("tb2")).UniqueID];   TextBox txtRes = (TextBox)PlaceHolder1.FindControl("tb31"); txtRes.Text = tbc.DateDiff(Convert.ToDateTime(endDate), Convert.ToDateTime(startDate)); }

Merajuddin Ansari10y ago
it contains DataBase connection and all and its big file.

its something like this:
http://stackoverflow.com/questions/5543717/dynamically-created-textboxes-not-updating
Riddhi Valecha10y ago
Hi..

zip your folder and send, we can directly open here and debug...
Merajuddin Ansari10y ago
.aspx only this i have in aspx
Amit Kumar Singh10y ago
.aspx file v send karo
Merajuddin Ansari10y ago
to create textbox dynamically.

private void CreateTextBox(string Fieldname)
{
tc1 = new TableCell();
tc1.Text = FieldeDescr;
tc = new TableCell();
TextBox txtBox = new TextBox();
txtBox.ID = Fieldname;
tc.Controls.Add(txtBox);
tr.Cells.Add(tc1);
tr.Cells.Add(tc);
}

protected void Page_Load(object sender, EventArgs e)
{
for(int i=0;i<=10;i++)
CreateTextBox("tb"+i);
}

private void Calculations()
{

DataSet ds = (DataSet)ViewState["fieldAction"];
Dictionary fidWithValues = new Dictionary();
foreach (DataTable table in ds.Tables)
{
foreach (DataRow row in table.Rows)
{
List formIds = new List();
TextBoxCalc tbc = new TextBoxCalc();
formIds = tbc.TextBoxIdsForAction(row["action"].ToString());
if (formIds.Count > 0)
{
if (row["ActionType"].ToString() == "Date")
{
string endDate = Request.Form[((TextBox)PlaceHolder1.FindControl(formIds[0].ToString())).UniqueID];
string startDate = Request.Form[((TextBox)PlaceHolder1.FindControl(formIds[1].ToString())).UniqueID];
if (startDate != null && endDate != null)
{
TextBox txtRes1 = (TextBox)PlaceHolder1.FindControl(row["fieldname"].ToString());
txtRes1.Text = tbc.DateDiff(Convert.ToDateTime(endDate), Convert.ToDateTime(startDate));
}
}
}
}
}

.aspx
only this i have in aspx
Amit Kumar Singh10y ago
Hey,

refer this link

1.http://www.aspsnippets.com/Articles/Creating-Dynamic-TextBox-Controls-in-ASPNet.aspx

2.http://www.dotnetpickles.com/2014/02/cnet-dynamically-create-textbox-in.html

3.https://support.microsoft.com/en-us/kb/317794
Riddhi Valecha10y ago
Can you share your code ? we can debug it !!
Merajuddin Ansari10y ago
no that is not my problem i am getting correct value from "concat" function ... the problem is dynamically created textbox value is not updating with new value.

for example if the txtRes1.Text="xyz" then afetr calling "concat" function there is no change in the textbox value.

function is returning correct value.

NOTE: its dynamically created textbox.
Amit Kumar Singh10y ago
Convert.ToString() because its handle null value also.

Always prefer to use Convert.ToString instead of ToString()
Riddhi Valecha10y ago
TextBox txtRes1 = (TextBox)PlaceHolder1.FindControl("id1");
txtRes1.Text= concat(value1, valu2).ToString();

public int concat(strin v1, string v2)
{
return v1+v2;
}
----

Just add "ToString()" at line - txtRes1.Text = concat(value1, valu2).ToString();
---
If still not getting updated, debug the program, see where it is getting in catch-block ; and send the error.