How to break the row in grid view control using asp.net

use <br /> Tag in your content

Row1<br />Row2<br />Row3

It'll show you output like below
Row1
Row2
Row3

BTW you can wrap the content by using ItemStyle-Wrap="true"

<asp:gridview id="GridView1" runat="server" xmlns:asp="#unknown">
<columns>
<asp:boundfield itemstyle-wrap="true" datafield="Column1" />
</columns>
</asp:gridview>

Option 1: Set "appropriate" width for that column and set the wrap property to true. Both the properties can be found in ItemStyle of the GridView.

Option 2: In the RowDataBound event, check for that column, and change the text to add \n after the number of words you want. Do remember to set the wrap property of the column to true.

Hope this helps!

I got a solution for my problem... following is the code for that. In the following code the important thing is we have to set the property of the column as HtmlEncode="False"

<asp:GridView ID="GridView1"  Width="900px" runat="server" BackColor="#CCCCCC" BorderColor="#999999" BorderStyle="Solid" BorderWidth="3px" CellPadding="4" CellSpacing="2" ForeColor="Black"  AutoGenerateColumns="False">
                                <FooterStyle BackColor="#CCCCCC" />
                                <RowStyle BackColor="White" />
                                <SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
                                <PagerStyle BackColor="#CCCCCC" ForeColor="Black" HorizontalAlign="Left" />
                                <HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />
                                <Columns>
                                    <asp:BoundField DataField="Machineid" HeaderText="Machineid" HtmlEncode="False" ItemStyle-Width="250px" />
                                    <asp:BoundField DataField="Status" HeaderText="Status" HtmlEncode="False" ItemStyle-Width="650px"/>
                                </Columns>
                            </asp:GridView>