how do i make my gridview to fit 100% on page

Question

How do i make my gridview's to fit nicely within the screen. I added this property width="100%" i. However my gridview still extends way beyond my header's width which i have set it as 100%.

Here are my source code of my gridview for the first attempt.

<asp:GridView ID="GWCase" runat="server"  Top="0%" Width="100%" BackColor="#CCCCCC" BorderColor="#999999" BorderStyle="Solid" BorderWidth="3px" CellPadding="4" CellSpacing="2" ForeColor="Black" Height="199px" AutoGenerateSelectButton="True" OnSelectedIndexChanged="GWCase_SelectedIndexChanged">

    <FooterStyle BackColor="#CCCCCC" />
    <HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />
    <PagerStyle BackColor="#CCCCCC" ForeColor="Black" HorizontalAlign="Left" />
    <RowStyle BackColor="White" />
    <SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
    <SortedAscendingCellStyle BackColor="#F1F1F1" />
    <SortedAscendingHeaderStyle BackColor="#808080" />
    <SortedDescendingCellStyle BackColor="#CAC9C9" />
    <SortedDescendingHeaderStyle BackColor="#383838" />
</asp:GridView>

I tried using the css method like this

<ul id="assigngw">
<asp:GridView ID="GWCase" runat="server"  Top="0%" BackColor="#CCCCCC" BorderColor="#999999" BorderStyle="Solid" BorderWidth="3px" CellPadding="4" CellSpacing="2" ForeColor="Black" Height="199px" AutoGenerateSelectButton="True" OnSelectedIndexChanged="GWCase_SelectedIndexChanged">

    <FooterStyle BackColor="#CCCCCC" />
    <HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />
    <PagerStyle BackColor="#CCCCCC" ForeColor="Black" HorizontalAlign="Left" />
    <RowStyle BackColor="White" />
    <SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
    <SortedAscendingCellStyle BackColor="#F1F1F1" />
    <SortedAscendingHeaderStyle BackColor="#808080" />
    <SortedDescendingCellStyle BackColor="#CAC9C9" />
    <SortedDescendingHeaderStyle BackColor="#383838" />
</asp:GridView>
    </ul>

Css code :

#assigngw {
width:100%;
}

Unfortunately both does not work.

Here is my entire source code.

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">

<link rel="stylesheet" href="css/style.css" type="text/css" />
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>

<ul id="assigngw">
    <asp:GridView ID="GWCase" runat="server" width="300px" Top="0%" BackColor="#CCCCCC" BorderColor="#999999" BorderStyle="Solid" BorderWidth="3px" CellPadding="4" CellSpacing="2" ForeColor="Black" Height="199px" AutoGenerateSelectButton="True" OnSelectedIndexChanged="GWCase_SelectedIndexChanged">

    <FooterStyle BackColor="#CCCCCC" />
    <HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />
    <PagerStyle BackColor="#CCCCCC" ForeColor="Black" HorizontalAlign="Left" />
    <RowStyle BackColor="White" />
    <SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
    <SortedAscendingCellStyle BackColor="#F1F1F1" />
    <SortedAscendingHeaderStyle BackColor="#808080" />
    <SortedDescendingCellStyle BackColor="#CAC9C9" />
    <SortedDescendingHeaderStyle BackColor="#383838" />
</asp:GridView>
    </ul>


<br />
Case ID :
<asp:Label ID="lblCID" runat="server"></asp:Label>
&nbsp;is situation near
<asp:DropDownList ID="lblocation" runat="server" OnSelectedIndexChanged="lblocation_SelectedIndexChanged" AutoPostBack="True" DataTextField="location" DataValueField="location">
    <asp:ListItem>Select Location</asp:ListItem>
    <asp:ListItem>Bukit Batok NPC</asp:ListItem>
    <asp:ListItem>Bukit Panjang NPC</asp:ListItem>
    <asp:ListItem>Choa Chu Kang NPC</asp:ListItem>
    <asp:ListItem>Jurong West NPC</asp:ListItem>
    <asp:ListItem>Nanyang NPC</asp:ListItem>
    <asp:ListItem>Woodlands East NPC</asp:ListItem>
    <asp:ListItem>Woodlands West NPC</asp:ListItem>
    <asp:ListItem>Ang Mo Kio North NPC</asp:ListItem>
    <asp:ListItem>Ang Mo Kio South NPC</asp:ListItem>
    <asp:ListItem>Punggol NPC</asp:ListItem>
    <asp:ListItem>Hougang NPC</asp:ListItem>
    <asp:ListItem>Sembawang NPC</asp:ListItem>
    <asp:ListItem>Serangoon NPC</asp:ListItem>
    <asp:ListItem>Sengkang NPC</asp:ListItem>
    <asp:ListItem>Yishun North NPC</asp:ListItem>
    <asp:ListItem>Yishun South NPC</asp:ListItem>
    <asp:ListItem>Bedok North NPC</asp:ListItem>
    <asp:ListItem>Bedok South NPC</asp:ListItem>
    <asp:ListItem>Changi NPC</asp:ListItem>
    <asp:ListItem>Geylang NPC</asp:ListItem>
    <asp:ListItem>Marine Parade NPC</asp:ListItem>
    <asp:ListItem>Pasir Ris NPC</asp:ListItem>
    <asp:ListItem>Tampines NPC</asp:ListItem>
    <asp:ListItem>Bukit Merah West NPC</asp:ListItem>
    <asp:ListItem>Clementi NPC</asp:ListItem>
    <asp:ListItem>Queenstown NPC</asp:ListItem>
    <asp:ListItem>Jurong East NPC</asp:ListItem>
    <asp:ListItem>Bishan NPC</asp:ListItem>
    <asp:ListItem>Bukit Timah NPC</asp:ListItem>
    <asp:ListItem>Kampung Java NPC</asp:ListItem>
    <asp:ListItem>Orchard NPC</asp:ListItem>
    <asp:ListItem>Toa Payoh NPC</asp:ListItem>
    <asp:ListItem>Bukit Merah East NPC</asp:ListItem>
    <asp:ListItem>Rochor NPC</asp:ListItem>
    <asp:ListItem>Marina Bay NPC</asp:ListItem>
</asp:DropDownList>
<br />
<br />
The following case will be assigned to this selected officer&nbsp;
    <asp:DropDownList ID="DDLpolice" runat="server" DataTextField="dropdownpolice" DataValueField="dropdownpolice" OnSelectedIndexChanged ="DDLpolice_SelectedIndexChanged1" style="height: 22px"
    AppendDataBoundItems="true" AutoPostBack="True">
<asp:ListItem Value="-1">Select Officer</asp:ListItem>
    </asp:DropDownList>

Answer 1

The problem is with your test content and the garbage text.

Add:

#assigngw td {
  word-wrap:break-word;
}

This will allow each cell to break on the long sentences that don't fit and will stop it increasing the size of the grid view.

EDIT

Try this

.gridview {
    width: 100%; 
    word-wrap:break-word;
    table-layout: fixed;
}

The key here is table-layout: fixed; as it forces the cells to fit the table instead of the table expanding to fit the cells.

Updated jsFiddle

Answer 2

You can also put your gridview in a div, like this

<div style="width:100%;overflow:scroll;"> <i>your gridview here</i> </div>

With this, the gridview doesn't extend beyond page width. But the user will scroll vertically across page to view all gridview contents.

Answer 3

It is the long text without space in the row that is pushing the grid out. You need to add this style attribute word-wrap:break-word; to the cell if you want the text to break.

Answer 4

 <style type="text/css">
        .tblgridview {
            width: 100%;
            word-wrap: break-word;
            table-layout: fixed;
            font-size: smaller;
            overflow: scroll;
        }
    </style>