I don't want grid view empty when button click event call

Question

1.00/5 (1 vote)

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C#

there is one dropdown and one button and two grid view. when i select dropdown value and than first grid will fill than i select radio button and click on apply button than second grid will be fill. problem is start now again i select drop down it will display first grid and select radio button and click on button and display only new record and old will remove so i want both

C#

protected void btnapply_Click(object sender, EventArgs e)
   {
          SelectModel();

   }

   public void SelectModel()
   {
       if (IsPostBack)
       {
           DataTable dt = new DataTable();
           dt.Columns.AddRange(new DataColumn[6] { new DataColumn("Software"), new DataColumn("id"), new DataColumn("module"), new DataColumn("rdoread"), new DataColumn("rdoreadmodify"), new DataColumn("all") });
           foreach (GridViewRow row in Gridmodule.Rows)
           {
               if (row.RowType == DataControlRowType.DataRow)
               {
                   CheckBox chkRead = (row.Cells[0].FindControl("rdoread") as CheckBox);
                   CheckBox chkReadModify = (row.Cells[0].FindControl("rdoreadmodify") as CheckBox);
                   CheckBox chkAll = (row.Cells[0].FindControl("rdoall") as CheckBox);

                   if (chkRead.Checked)
                   {
                       string id = (row.Cells[1].FindControl("lblid") as Label).Text;
                       string module = (row.Cells[2].FindControl("lblmodule") as Label).Text;
                       bool read = true;
                       bool readmodify = false;
                       bool all = false;
                       string soft = (drpsoftware.SelectedItem.ToString());

                       dt.Rows.Add(soft, id, module, read, readmodify, all);
                   }

                   if (chkReadModify.Checked)
                   {
                       string id = (row.Cells[1].FindControl("lblid") as Label).Text;
                       string module = (row.Cells[2].FindControl("lblmodule") as Label).Text;
                       bool read = false;
                       bool readmodify = true;
                       bool all = false;
                       string soft = (drpsoftware.SelectedItem.ToString());

                       dt.Rows.Add(soft, id, module, read, readmodify, all);
                   }

                   if (chkAll.Checked)
                   {
                       string id = (row.Cells[1].FindControl("lblid") as Label).Text;
                       string module = (row.Cells[2].FindControl("lblmodule") as Label).Text;
                       bool read = false;
                       bool readmodify = false;
                       bool all = true;
                       string soft = (drpsoftware.SelectedItem.ToString());

                       dt.Rows.Add(soft, id, module, read, readmodify, all);
                   }

               }
           }
           gridselected.DataSource = dt;
           gridselected.DataBind();
       }

i want that when i press first time this button it fill grid and when i press again the same button it never erase previous data and fill new data with old .

What I have tried:

i try viewstat but can no solve the issue.

Posted 12-May-16 4:38am

Kumbhani Bhavesh

Updated 12-May-16 5:56am

v2

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Comments

Karthik_Mahalingam 12-May-16 10:44am

second time you are not checking any checkbox i guess.

Kumbhani Bhavesh 12-May-16 10:48am

no . check it and press on button than it will replace new data place with old.

Karthik_Mahalingam 12-May-16 10:50am

ya it will refresh the data, what do you need exactly??
you want new data to be displayed ?

Karthik_Mahalingam 12-May-16 10:51am

Always use Reply button, to post Comments/query to the user, else the User wont get notified.

Kumbhani Bhavesh 12-May-16 11:10am

i want both data new and old

Kumbhani Bhavesh 12-May-16 11:10am

i want both data new and old

Kumbhani Bhavesh 12-May-16 11:10am

i want both data new and old

Karthik_Mahalingam 12-May-16 11:11am

old data means 1st click data ?
new data means 2nd click data ?
if so, then how wil you handle the duplicate ??

provide more info..

Kumbhani Bhavesh 12-May-16 11:14am

don't worry about it

Karthik_Mahalingam 12-May-16 11:17am

so duplicate date is fine with you ?

Karthik_Mahalingam 12-May-16 11:18am

post your markup code for gridselected

Kumbhani Bhavesh 12-May-16 11:27am

i already done it

Karthik_Mahalingam 12-May-16 11:31am

not cs code, i mean aspx code for gridselected <asp:gridview id = gridselected

Kumbhani Bhavesh 12-May-16 11:43am

<asp:GridView ID="gridselected" runat="server" AutoGenerateColumns="False" CssClass="mydatagrid"
PagerStyle-CssClass="pager" HeaderStyle-CssClass="header" RowStyle-CssClass="rows"
AllowPaging="True">
<columns>
<asp:BoundField DataField="Software" HeaderText="Software" ItemStyle-Width="50" />
<asp:BoundField DataField="id" HeaderText="Id" ItemStyle-Width="50" />
<asp:BoundField DataField="module" HeaderText="Module" ItemStyle-Width="50" />
<asp:BoundField DataField="rdoread" HeaderText="Read" ItemStyle-Width="50" />
<asp:BoundField DataField="rdoreadmodify" HeaderText="Read & Modify" ItemStyle-Width="50" />
<asp:BoundField DataField="all" HeaderText="All" ItemStyle-Width="50" />

Karthik_Mahalingam 12-May-16 11:58am

refer my sample code and check whether it helps

Sergey Alexandrovich Kryukov 12-May-16 10:55am

Debugger!

—SA

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Karthik_Mahalingam · Accepted Answer · 2016-05-12T05:56:00

Refer this simple example and implement in your code..

ASPX:

ASP.NET

<asp:GridView ID="Gridmodule" runat="server">
            <Columns>
                 <asp:TemplateField>
                    <ItemTemplate>
                        <asp:CheckBox  ID="chk" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:TextBox Text="" ID="txtSoftware" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>

        <asp:GridView ID="gridselected" runat="server">
            <Columns>
                <asp:BoundField DataField="Software" HeaderText="Software" ItemStyle-Width="50" />
            </Columns> 
        </asp:GridView> 

        <asp:Button ID="btnapply" runat="server" Text="Apply" OnClick="btnapply_Click" />

CS

C#

protected void Page_Load(object sender, EventArgs e)
     {
         if (!IsPostBack)
         {
             DataTable dt = new DataTable();
             dt.Columns.Add("SomeColumn");
             dt.Rows.Add("one");
             dt.Rows.Add("two");
             Gridmodule.DataSource = dt;
             Gridmodule.DataBind();
         }
     }
     protected void btnapply_Click(object sender, EventArgs e)
     {
         DataTable dt = new DataTable();
         dt.Columns.Add("Software");
         foreach (GridViewRow row in Gridmodule.Rows)
         {
             if (row.RowType == DataControlRowType.DataRow)
             {
                 bool isChecked = (row.FindControl("chk") as CheckBox).Checked;
                 if (isChecked)
                 {
                     string a = (row.FindControl("txtSoftware") as TextBox).Text;
                     dt.Rows.Add(a);
                 }
             }
         }

         // Adding the Second grid data to datatable
         foreach (GridViewRow row in gridselected.Rows)
             if (row.RowType == DataControlRowType.DataRow)
             {
                 string software = row.Cells[0].Text;
                 // similarly for all columns
                 dt.Rows.Add(software);
             }


         gridselected.DataSource = dt;
         gridselected.DataBind(); ;
     }

I don't want grid view empty when button click event call

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