Gridview not appearing between views in multiview

Hi,

I have a multiview and have 2 views inside it. In view1 i search by name and a gridview appears based on the search. I click on the link button inside the gridview and i activate view2 and i show the results. I have a back button in view2 and i set activeviewindex=0 referring to view1 and i dont see the gridview which i saw earlier. I am just seeing the textbox where i entered the name and button to search but not the gridview. What would be the issue. I just say multivew1.activeviewindex = 0 but no gridview.

Thanks!

Re: Gridview not appearing between views in multiview

As you change to different multiviews, make sure you do a databind each time.

Re: Gridview not appearing between views in multiview

Thanks for the reply. How to do that? Again do i need to call the function that loads the dataset and do the databinding?

Re: Gridview not appearing between views in multiview

Kind of like this to repopulate your gridview from codebehind.

GridView1.DataBind()

Re: Gridview not appearing between views in multiview

I tried it but the gridview does not appear. So all the datasource will be there when i come back to the previous view? because i do not have gridview.datasource = dataset. All i have in the backbutton click event is gridview.databind() as you said, multiview.activeviewindex = 0

Re: Gridview not appearing between views in multiview

Just another question related to this topic, even the textbox value is not maintained between views. when i click on back button there is no value in the textbox either. why is that.

Thanks!

Re: Gridview not appearing between views in multiview

The problem you are having is your application is not maintaining session state. I recently had to do some major fanagling to maintain checkbox state using a control as I would go back and forth between pages. Take a look at this thread as it might give you some clues on how to maintain your gridview stuff.

http://forums.asp.net/t/1741010.aspx/1?Paging+through+gridview+clears+selected+checkboxes

Re: Gridview not appearing between views in multiview

OK. Is this scenario(for checkbox control) applies to textbox control too? Because when i comeback to view1 from view2, the values in the textbox is cleared!

Re: Gridview not appearing between views in multiview

That sounds like the behavior. Chances are your app may be doing a postback as it goes from view1 to view2.

Re: Gridview not appearing between views in multiview

Hi, I tested on my computer, found the status of the Textbox and GridView persist. Please make sure ViewStateMode attribute in @ Page directive is Enabled. I made a simple example, you can refer to it.

Default.aspx:

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:MultiView ID="MultiView1" runat="server" ActiveViewIndex="0">
            <asp:View ID="View1" runat="server">
                <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                <asp:Button ID="Button1"
                    runat="server" Text="Button" onclick="Button1_Click" /><asp:Label ID="Label1" runat="server" Text="View1"></asp:Label>
                <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
                    DataKeyNames="UserName">
                    <Columns>
                        <asp:BoundField DataField="UserID" HeaderText="UserID" InsertVisible="False"
                            ReadOnly="True" SortExpression="UserID" />
                        <asp:BoundField DataField="UserName" HeaderText="UserName" ReadOnly="True"
                            SortExpression="UserName" />
                        <asp:BoundField DataField="RealName" HeaderText="RealName"
                            SortExpression="RealName" />
                        <asp:BoundField DataField="Age" HeaderText="Age" SortExpression="Age" />
                        <asp:CheckBoxField DataField="Sex" HeaderText="Sex" SortExpression="Sex" />
                        <asp:BoundField DataField="Mobile" HeaderText="Mobile"
                            SortExpression="Mobile" />
                        <asp:BoundField DataField="Phone" HeaderText="Phone" SortExpression="Phone" />
                        <asp:BoundField DataField="Email" HeaderText="Email" SortExpression="Email" />
                    </Columns>
                </asp:GridView>
                <asp:Button ID="Button3" runat="server" Text="ShowView2" onclick="Button3_Click" />
            </asp:View>
            <asp:View ID="View2" runat="server">
             <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
                <asp:Button ID="Button2"
                    runat="server" Text="ShowView1" onclick="Button2_Click" /><asp:Label ID="Label2" runat="server" Text="View2"></asp:Label>
            </asp:View>
        </asp:MultiView>
    </div>
    </form>
</body>
</html>

Default.aspx.cs:

protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            DataBindGridView();
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            this.MultiView1.ActiveViewIndex = 0;
        }

        // Please modify your own SQL sentence here:
        private void DataBindGridView()
        {

            string connectionString = WebConfigurationManager.ConnectionStrings["ASPNETSTUDYConnectionString"].ConnectionString;
            SqlConnection conn = new SqlConnection(connectionString);
            SqlCommand comd = conn.CreateCommand();
            comd.CommandText = "select * from UserInfo where UserID=@UserID";

            int UserID  = Int32.Parse(this.TextBox1.Text);
            comd.Parameters.AddWithValue("@UserID", UserID);
            try
            {
                DataTable table = new DataTable();
                SqlDataAdapter adapter = new SqlDataAdapter(comd);
                adapter.Fill(table);
                this.GridView1.DataSource = table;
                this.GridView1.DataBind();
            }
            catch (Exception)
            {
            }
            finally
            {

            }
        }

        protected void Button3_Click(object sender, EventArgs e)
        {
            this.MultiView1.ActiveViewIndex = 1;
        }

Additionally, please paste your codes here for analysis.