use this solution
Create PROCEDURE usp_getAlldata
AS
BEGIN
select fileId,userId,fileName,(CONVERT(varchar(50),fileSize ) + '<br>' + CONVERT(varchar(50),fileType)) as fourthcolumn,filepath,createdOn,statusId,lastModifiedOn from fileInfo
END
GO
</br>
<asp:gridview id="GridView1" runat="server" autogeneratecolumns="false">
<columns>
<asp:boundfield datafield="fileId" htmlencode="false" />
<asp:boundfield datafield="userId" htmlencode="false" />
<asp:boundfield datafield="fileName" htmlencode="false" />
<asp:boundfield datafield="fourthcolumn" htmlencode="false" />
</columns>
</asp:gridview>
protected void Page_Load(object sender, EventArgs e)
{
DataSet ds = new DataSet();
SqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
cn.Open();
SqlCommand cmd = new SqlCommand("usp_getAlldata", cn);
cmd.CommandType = CommandType.StoredProcedure;
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
cmd.ExecuteNonQuery();
GridView1.DataSource = ds;
GridView1.DataBind();
}