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how to access the textbox of dynamically created table in user control

fsh290 (Programmer) (OP)
24 Feb 12 0:29
Actually i'm creating web template using asp.net and c#.
in my user control page i have to create the table dynamically. i just read the data from XML file then retrieve the name and number of columns and rows of each table. while i'm creating the table i assign the name and id to each cell. because i have one row including some textbox for adding the data to database. but after i have created the table i can not access to the textbox cells based on id to get their data and insert it to database. my dynamic table code is:

CODE

public void CreateAddDynamicTable()
{
    XmlDocument xDocRead = new XmlDocument();
    xDocRead.Load(Server.MapPath("ModuleTemp.xml"));
    string xModuleName = hid_ChooseModule.Value;
    XmlNode xColCounter = xDocRead.SelectSingleNode("ModuleTemp/" + xModuleName + "/List");
    int colCount = xColCounter.ChildNodes.Count;

    int nonPkCounter = 0;
    string[] nonPrimaryKey = new string[100];
    string[] nonPkNewDataTemp = new string[100];

    for (int i = 1; i <= colCount; i++)
    {
        if (xDocRead.SelectSingleNode("ModuleTemp/" + xModuleName + "/Add/TableColumn" + i).Attributes.GetNamedItem("IsPrimaryKey").Value == "N")
        {
            nonPrimaryKey[nonPkCounter] = xDocRead.SelectSingleNode("ModuleTemp/" + xModuleName + "/Add/TableColumn" + i).Attributes.GetNamedItem("Name").Value;
            nonPkCounter++;
        }
    }

    ph_Uc_AddModule.Controls.Clear();

    // Fetch the number of Rows and Columns for the table
    // using the properties
    int tblRows = nonPkCounter;
    int tblCols = 2;

    // Create a Table and set its properties
    Table tbl = new Table();
    // Add the table to the placeholder control
    ph_Uc_AddModule.Controls.Add(tbl);
    // Now iterate through the table and add your controls
    for (int i = 0; i < tblRows; i++)
    {
        TableRow tr = new TableRow();
        for (int j = 0; j < tblCols; j++)
        {
            TableCell tc = new TableCell();
            Label td_Add_Header = new Label();
            TextBox td_Add = new TextBox();

            if (j == 0)
            {
                td_Add_Header.Text = nonPrimaryKey[i];
                td_Add_Header.ID = "lb" + (i + 1) + "_header_AddModule";

                // Add the control to the TableCell
                tc.Controls.Add(td_Add_Header);
                tc.CssClass = "td_Header_AddModule";
            }
            else
            {
                td_Add.Text = "";
                td_Add.ID = "tb" + (i + 1) + "_AddModule";
                // Add the control to the TableCell
                tc.Controls.Add(td_Add);
                tc.CssClass = "td_Tb_AddModule";
            }

            // Add the TableCell to the TableRow
            tr.Cells.Add(tc);
        }
        // Add the TableRow to the Table
        tbl.Rows.Add(tr);
    }
}

my user control page which is contain a PlaceHolder is as below:

CODE

<asp:Panel ID="pn_Uc_TModule" runat="server">

<asp:Table runat="server" ID="table_Uc_TModule" CssClass="table_Uc_TModule" Width="100%">
 <asp:TableRow runat="server" VerticalAlign="Top" Height="50px">
                <asp:TableCell runat="server">
                    <asp:Button runat="server" Text="" CssClass="btn_Add_Active" OnClick="btn_AddNew_Click" />
                    <asp:Button ID="btn_Cancel_NewItem" runat="server" Text="" CssClass="btn_Cancel_New" OnClick="btn_Cancel_AddNew" Visible="false" />

                    <asp:Table runat="server" ID="table_Uc_AddModule" Visible="false">
                        <asp:TableRow runat="server">
                            <asp:TableCell runat="server" >

                                <asp:PlaceHolder ID="ph_Uc_AddModule" runat="server">
                                </asp:PlaceHolder>

                            </asp:TableCell>
                        </asp:TableRow>
                        <asp:TableRow ID="TableRow1" runat="server">
                            <asp:TableCell runat="server" CssClass="td_Tb_AddModule" HorizontalAlign="Center">
                                <asp:Button ID="btn_Insert" runat="server" OnClick="Uc_AddModule_ItemInsert" Text="" CssClass="btn_Add" />
                                <asp:Button ID="btn_Cancel" runat="server" OnClick="Uc_AddModule_Clear" Text="" CssClass="btn_Clear" />
                            </asp:TableCell>
                        </asp:TableRow>
                    </asp:Table>

                </asp:TableCell>
            </asp:TableRow>
</asp:Table>
</asp:Panel>

i'm using below method in my insert function at the code behind to access the data inserted at the textbox:

CODE

for (int i = 1; i <= nonPkCounter; i++)
    {
        TextBox textBox = (ph_Uc_AddModule.FindControl("tb" + i + "_AddModule")) as TextBox;
        nonPkNewDataTemp[i] = textBox.Text;
    }

i have tried pn_Uc_TModule.FindControl("tb" + i + "_AddModule") and also This.ph_Uc_AddModule.FindControl("tb" + i + "_AddModule") but still con not get the texbox data to insert it to database. could you please guide me how to get it done.
appreciate your consideration.
jbenson001 (Programmer)
24 Feb 12 9:01
The code where you are trying to find the textboxes is where, on the page or usercontrol?

Also, I would first try finding the placeholder first, just to make sure you are actually coding it correctly and from the right place.
fsh290 (Programmer) (OP)
26 Feb 12 21:08
thanks jbenson001 for reply,
i'm trying to find this control from usercontrol code behind.
and i have put it in my insert function.
i have used <Table> instead of <placeHolder> in my usercontor page as below but still does not work. and i can not access the textBox.

CODE

<asp:Table runat="server" ID="add_Table"></asp:Table>

try to access with below code at usercontrol code behind:

CODE

for (int i = 1; i <= nonPkCounter; i++)
    {
        TextBox textBox = (add_Table.FindControl("tb" + i + "_AddModule")) as TextBox;
        nonPkNewDataTemp[i] = textBox.Text;
    }

any suggestion?
thanks
jbenson001 (Programmer)
27 Feb 12 9:48
Like I said in my last post.  Try just finding the placeholder first or table first, what ever the containing object is.  Once you know you can find that object correctly, then write the code to find the textboxes.

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