How to find the child controls and their values which are present in dynamic controls in asp.net

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Hi all,

I am created a dynamic gridview based on dynamic temparory table by calling SP. In ItemTemplate a used Lable child control to display values,in EditItemTmplate i used Lable and DropDowlList to display values.

Now my requirement is when ever user clicks Update link Button i need to capture the values present in all controls in all columns.

My .aspx.cs code is as follows:

gvVendorSupportDocuments.Columns.Clear();
           SupportDocumentsForVerdorPersistence sdvpSearch = new SupportDocumentsForVerdorPersistence();
           sdvpSearch.FromDate = Convert.ToDateTime(txtFromDate.Text);
           sdvpSearch.ToDate = Convert.ToDateTime(txtToDate.Text);
           sdvpSearch.InVendorID = Convert.ToInt32(txtVendorID.Text);
           DataSet ds = sdvpSearch.GetSupportDocumentsForVendor();
           dtcols = ds.Tables[0].Columns.Count;
           dtrows = ds.Tables[0].Rows.Count;
           //GridViewTemplate gvt = new GridViewTemplate(dtrows ,dtcols);
           //gvt.colsize = dtcols;
           //gvt.rowsize = dtrows;
           for (int i = 0; i < dtcols; i++)
           {
               TemplateField TF = new TemplateField();
               TF.HeaderText = Convert.ToString(ds.Tables[0].Columns[i].ColumnName);
               for (int j = 0; j <dtrows; j++)
               {
                   string colvalue = Convert.ToString(ds.Tables[0].Rows[j][i]);
                   TF.ItemTemplate = new GridViewTemplate(ListItemType.Item, colvalue, i, j, dtrows, dtcols);
                   TF.EditItemTemplate = new GridViewTemplate(ListItemType.EditItem, colvalue, i, j, dtrows, dtcols);
                   //if (colvalue == "")
                   //    TF.Visible =Convert .ToBoolean ("false");
               }
               gvVendorSupportDocuments.Columns.Add(TF);
               //gvVendorSupportDocuments.DataSource = ds;
               //gvVendorSupportDocuments.DataBind();
           }
           gvVendorSupportDocuments.DataSource = ds;
           gvVendorSupportDocuments.DataBind();

and GridViewTemplate calss code is as follows:

using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
namespace Vendor
{
    
    public class GridViewTemplate:System.Web.UI.Page, ITemplate
    {
        public int iRowCount;
        public int iColumnCount;
        ListItemType templateType;
        int i;
        int j;
        static object[,] values = new object[200, 200];
        static int colNo = 0;
        static int rowNo = 0;
        public GridViewTemplate(ListItemType type, string colvalue, int colsno, int rowsno, int dtrows, int dtcols)
        {
            templateType = type;
            i= colsno;
            j = rowsno;
            //object[][] values;          
            if (colvalue == "")
            {
                values[j, i] = "N/A";
            }
            else
            {
                values[j, i] = colvalue;
            }  
            //value = colvalue;             
            iRowCount = dtrows;
            iColumnCount = dtcols;
        }
        public  void InstantiateIn(System.Web.UI.Control container)
        {
            //rowsize =Convert .ToInt32 (values )
            Literal lc = new Literal();
            Label lbl = new Label();
            LinkButton lb = new LinkButton();
            // CheckBox ckh = new CheckBox();
            //TextBox tb1 = new TextBox();
            DropDownList ddl = new DropDownList();
            ddl.Items.Add("YES");
            ddl.Items.Add("NO");
           
            switch (templateType)
            {
                case ListItemType.Header:
                    //lc.Text = "<B>" + value + "</B>";
                    lb.Text = "Edit";
                    lb.CommandName = "EditButton";
                    container.Controls.Add(lb);
                    container.Controls.Add(lc);
                    break;
                case ListItemType.Item:
                    //int noofrows=Convert .ToInt32 ( values.GetLength[0]);
                    //int noofcols =Convert .ToInt32 ( values.GetLength[1]);
                    while (rowNo < iRowCount)
                    {
                        while (colNo < iColumnCount)
                        {
                            lbl.Text = Convert.ToString(values[rowNo, colNo]);
                            colNo++;
                            break;
                        }
                        if (colNo >= iColumnCount)
                        {
                            rowNo++;
                            colNo = 0;
                        }
                        if (rowNo >= iRowCount)
                        {
                            rowNo = 0;
                        }
                        break;
                    }
                    container.Controls.Add(lbl);
                    //lbl.Text = value;
                    //ddl.Enabled = Convert.ToBoolean("False");
                    //container.Controls.Add(ckh);
                    break;
                case ListItemType.EditItem:
                    //TextBox tb = new TextBox();
                    //tb.Text = "";
                    while (rowNo < iRowCount)
                    {
                        while (colNo < iColumnCount)
                        {
                            string fielddata = Convert.ToString(values[rowNo, colNo]);
                            if (fielddata == "NO" | fielddata == "YES")
                            {
                                ddl.SelectedValue = Convert.ToString(fielddata);
                                container.Controls.Add(ddl);
                            }
                            else
                            {
                                lbl.Text = Convert.ToString(fielddata);
                                container.Controls.Add(lbl);
                            }
                            colNo++;
                            break;
                        }
                        if (colNo >= iColumnCount)
                        {
                            rowNo++;
                            colNo = 0;
                        }
                        if (rowNo >= iRowCount)
                        {
                            rowNo = 0;
                        }
                        break;
                    }
                    //container.Controls.Add(tb);
                    break;
                case ListItemType.Footer:
                    //lc.Text = "<I>" + value + "</I>";
                    container.Controls.Add(lc);
                    break;
            }
        }
    }
}

Please anybody help me to get my requirment.

Thanks in advance
Uday

Posted 27-Sep-11 23:55pm

udaysimha

Updated 28-Sep-11 0:06am

Slacker007

v2

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Muralikrishna8811 · Answer 1 · 2011-09-28T01:12:00

Hi,

Upto my knowledge you can able to get values for child controls from inner data control.

On only If you create itemcommand event for that dynamic data control.

Here I write some code for get child control of inner data control values

Just check as it is

ASP.NET

<form id="form1" runat="server">
<div>
    <asp:datalist id="DataList1" runat="server" width="60%" repeatcolumns="3" repeatdirection="Horizontal" xmlns:asp="#unknown">
        OnItemDataBound="DataList1_ItemDataBound">
        <HeaderTemplate>
        </HeaderTemplate>
        <itemtemplate>
            <table>
                <tr>
                    <td>
                        Head Item
                        <asp:label id="Label1" runat="server" text="<%#Container.DataItem %>">
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:datalist id="DataList2" runat="server" onitemcommand="DataList1_ItemCommand">
                            <HeaderTemplate>
                                <table>
                            </HeaderTemplate>
                            <itemtemplate>
                                <tr>
                                    <td>
                                        <asp:textbox id="TextBox1" runat="server">
                                    </td>
                                    <td>
                                        <asp:linkbutton id="LinkButton1" runat="server" commandname="sd" commandargument="4">
                                            <asp:label id="Label2" runat="server" text="<%#Container.DataItem %>">

                                    </td>
                                </tr>
                            </itemtemplate>
                            <footertemplate>
                                </footertemplate></table>


                    </td>
                </tr>
            </table>
        </itemtemplate>
        <footertemplate>
        </footertemplate>

</div>
</form>

And the code behind file contains

C#

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {


            List<int> str = new List<int>();
            str.Add(1);
            str.Add(2);
            str.Add(3);
            str.Add(4);
            str.Add(5);
            str.Add(6);
            
            DataList1.DataSource = str;
            DataList1.DataBind();


        }
    }
    protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)
    {
        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
        {
            DataList dtlst = (DataList)e.Item.FindControl("DataList2");
            Label  lblid = (Label )e.Item.FindControl("Label1");
            List<int> str = new List<int>();
            str.Add(1);
            str.Add(2);
            str.Add(3);
            str.Add(4);
            str.Add(5);
            str.Add(6);

            dtlst.DataSource = str;
            dtlst.DataBind();

        }
    }
    protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
    {
        int cnt=e.Item.Controls.Count;
        TextBox cltr = (TextBox)e.Item.FindControl("TextBox1");
  string uname = cltr.Text;
        
    }
</int></int></int></int>

I hope you'll Understand What I did.

finally what I'm saying is If you able to create itemcommand event then your problem is solved.

Here I used datalist control you can use gridview also

All the Best.