2011. 9. 21. 18:25

GridView 컨트롤 이용한 게시판 만들기


DB 생성.

SQL 파일 첨부


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- GridView 를 사용하지 않는 일반적인 테이블 구조입니다.

* App_Code 의 

       DBConn.cs

  using System.Data.SqlClient;

/// <summary>
/// DBConn의 요약 설명입니다.
/// </summary>
public class DBConn
{
    //1. SQL 서버 이름지정
    string source = @"Data Source=PC\SQLEXPRESS;Initial Catalog=ClickDB;User ID=sa;Password=XXXXXXXXX";
    SqlConnection conn;

    //2. 데이터 베이스 열기
    public void Open()
    {
        conn = new SqlConnection(source);
        conn.Open();
    }

    //3. 데이터 베이스 닫기
    public void Close()
    {
        conn.Close();
    }

    //4. SQL 문 실행
    public void ExecuteSQL(string sql)
    {
        SqlCommand cmd = new SqlCommand(sql, conn);
        cmd.ExecuteNonQuery();
    }
    //5. SQL 문을 실행하고, SqlDataReader 객체를 리턴합니다.
    public SqlDataReader ExecuteReader(string sql)
    {
        SqlCommand cmd = new SqlCommand(sql, conn);
        return cmd.ExecuteReader();
    }
    //6.SQL 문을 실행하고, DataSet 객체를 리턴합니다.
    public DataSet GetDataSet(string sql)
    {
        SqlDataAdapter adapter = new SqlDataAdapter();
        adapter.SelectCommand = new SqlCommand(sql, conn);

        DataSet ds = new DataSet();
        adapter.Fill(ds);

        return ds;
    }

 public DBConn()
 {
  //
  // TODO: 여기에 생성자 논리를 추가합니다.
  //
 }
}



Default.aspx.cs

using System.Data.SqlClient;
using System.Data.OleDb;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        ShowList();
    }

    public void ShowList()
    {
        //1.데이터베이스 열기
        DBConn conn = new DBConn();
        conn.Open();

        //2.SQL 문 실행
        //OleDbDataReader reader = conn.ExecuteReader("select * from board");
        SqlDataReader reader = conn.ExecuteReader("select * from board");
        //실행결과 보여주기
        Response.Write("<table border=1>");
        while (reader.Read())
        {
            Response.Write("<tr>");
            Response.Write("<td>" + reader["id"]+"</td>");
            Response.Write("<td>" + reader["title"]+"</td>");
            Response.Write("<td>" + reader["dtime"] + "</td>");
            Response.Write("<td>" + reader["name"] + "</td>");
            Response.Write("<td>" + reader["hit"] + "</td>");
            Response.Write("</tr>");
        }
        Response.Write("</table>");

        //4.데이터 베이스 닫기
        conn.Close();
    }
}


###################################################################################################################

GridView 를 이용한게시판


List.aspx
  
  <div>
   
        <asp:GridView ID="GridView1" runat="server" AllowPaging="True"
            AutoGenerateColumns="False" BackColor="#CC33FF" BorderColor="Blue"
            BorderStyle="Solid" PageSize="5">
            <Columns>
              <asp:BoundField DataField="id" HeaderText="NO">
               <HeaderStyle Width="25px" />
              </asp:BoundField>
              <asp:TemplateField>
               <ItemTemplate>
                <img src="images\note.jpg" />
               </ItemTemplate>
              </asp:TemplateField>             
              <asp:TemplateField HeaderText="제목">
               <HeaderStyle Width="300px" />
               <ItemTemplate>
               <%# GetReplyIcon(Eval("gr_depth")) %>
               <asp:HyperLink ID="Hyperlink2" runat="server" NavigateUrl='<%# GetShowUrl(Eval("id")) %>' Text='<%# Eval("title") %>'></asp:HyperLink>
               </ItemTemplate>
              </asp:TemplateField>
              <asp:BoundField DataField="name" HeaderText="이름" >
                <HeaderStyle Width="50px"></HeaderStyle>
              </asp:BoundField >
              <asp:BoundField DataField="dtime" HeaderText="올린날짜">
               <HeaderStyle Width="80px"></HeaderStyle>
              </asp:BoundField>
              <asp:BoundField DataField="hit" HeaderText="조회">
              </asp:BoundField>
             
            </Columns>
            <PagerStyle HorizontalAlign="Center" />
            <AlternatingRowStyle BackColor="#99FFCC" />
        </asp:GridView>
       
        <asp:ImageButton ID="btnWrite" runat="server" ImageUrl="Images/write.gif" />
       
        <br />
 
    </div>


*  코드 설명
   1. GetReplyIcon()
       답글을 올렸을 때 글이 조금씩 들어가 보이도록 하기 위해 Depth 정보에 따라 공백 문자를 추가하고 아이콘
       이미지를 넣어줍니다.
   2. GetShowUrl()
       제목 링크를 클릭했을때, 선택한 글을 보여줄 수 있도록 URL을 리턴합니다.
       예) NavigateUrl='show.asp?id=100'



List.aspx.cs


public partial class List : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        //1.데이터 베이스 열기
        DBConn conn = new DBConn();
        conn.Open();

        //2.데이터셋 구하기
        DataSet ds = conn.GetDataSet("select * from Board order by gr_id desc, gr_pos asc");

        //3.DataSource 지정
        GridView1.DataSource = ds.Tables[0].DefaultView;

        //4.페이지 번호에 따라 이동, 페이지 번호가 없으면 첫 번째 페이지로 이동
        GridView1.PageIndex = (Session["page"] == null) ? 0 : (int)Session["Page"];
        GridView1.DataBind();

        //5.데이터베이스 닫기
        conn.Close();
    }
    public string GetReplyIcon(object obj)
    {
        int depth = (int)obj;
        if (depth == 0) return "";

        string shtml = "";

        for (int i = 0; i < depth; i++)
            shtml += "&nbsp;&nbsp;&nbsp;&nbsp;";

        shtml += "<img src='images\\re.gif'>";
        return shtml;
    }
    public string GetShowUrl(object obj)
    {
        return "show.aspx?id=" + obj;
    }
    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        //새로운 페이지에 번호를 넣어줍니다.
        GridView1.PageIndex = e.NewPageIndex;
        GridView1.DataBind();

        //현재 페이지 번호 저장
        Session["page"] = GridView1.PageIndex;
    }
    protected void btnWrite_Click(object sender, ImageClickEventArgs e)
    {
        Response.Write("write.aspx");
    }
}




 Write.aspx

<body>
    <form id="form1" runat="server">
     <div>
        <table>
            <tr>
                <td colspan="2" style="height: 25px">
                    <asp:Label ID="Label4" runat="server" BackColor="#8080FF" BorderColor="Black" BorderStyle="Solid"
                        BorderWidth="1px" Font-Bold="True" ForeColor="White" Height="20px" Width="454px">글 쓰기</asp:Label></td>
                <td style="width: 20px; height: 25px">
                </td>
            </tr>
            <tr>
                <td style="width: 55px; height: 25px;">
                    <asp:Label ID="Label1" runat="server" Text="글쓴이"></asp:Label>
                </td>
                <td style="width: 284px; height: 25px;">
                    <asp:TextBox ID="txtName" runat="server" Width="291px"></asp:TextBox></td>
                <td style="width: 20px; height: 25px;">
                    <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtName"
                        ErrorMessage="RequiredFieldValidator">*</asp:RequiredFieldValidator>
                </td>
            </tr>
            <tr>
                <td style="width: 55px">
                    <asp:Label ID="Label2" runat="server" Text="글제목"></asp:Label>
                </td>
                <td style="width: 284px">
                    <asp:TextBox ID="txtTitle" runat="server" Width="292px"></asp:TextBox></td>
                <td style="width: 20px">
                    <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="txtTitle">*</asp:RequiredFieldValidator>
                </td>
            </tr>
            <tr>
                <td style="width: 55px; height: 86px;">
                    <asp:Label ID="Label3" runat="server" Text="내용"></asp:Label>
                </td>
                <td style="width: 284px; height: 86px;">
                    <asp:TextBox ID="txtBody" runat="server" Height="125px" Rows="12" TextMode="MultiLine"
                        Width="391px"></asp:TextBox></td>
                <td style="width: 20px; height: 86px;">
                    <asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="txtBody">*</asp:RequiredFieldValidator>
                </td>
            </tr>
            <tr>
                <td style="width: 55px; height: 16px">
                </td>
                <td style="width: 284px; height: 16px">
                    <asp:ImageButton ID="btnSave" runat="server" ImageUrl="~/Images/write.gif" OnClick="btnSave_Click" />
                    <asp:ImageButton ID="btnList" runat="server" ImageUrl="~/Images/list.gif"
                        OnClick="btnList_Click" style="height: 25px" /></td>
                <td style="width: 20px; height: 16px">
                </td>
            </tr>
        </table>
        &nbsp;&nbsp;</div>
    </form>
</body>



Write.aspx.cs


using System.Data.SqlClient;

public partial class Write : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            if(Request["mode"] == "modify") //수정(modify)모드
            {
                string sql = "select * from board id = " + Request["id"];
               
                //1.데이터 베이스 열기
                DBConn conn = new DBConn();
                conn.Open();

                //2. sql 문 실행
                SqlDataReader reader = conn.ExecuteReader(sql);

                if (reader.Read())
                {
                    txtName.Text = reader["name"].ToString();
                    txtTitle.Text = reader["title"].ToString();
                    txtBody.Text = reader["body"].ToString();
                }

                //3. 데이터 베이스 닫기.
                reader.Close();
                conn.Close();
            }
        }
    }
    private void New()
    {
        string sql1 = "Insert into board(name, title, body, dtime, hit, gr_id, gr_depth, gr_pos) values("
                       + "'" + txtName.Text + "',"
                       + "'" + txtTitle.Text + "',"
                       + "'" + txtBody.Text + "',"
                       + "'" + DateTime.Now.ToShortDateString() + "',0,0,0,0)";

        string sql2 = "update board set gr_id = id where gr_id = 0";

        DBConn conn = new DBConn();

        conn.Open();
        conn.ExecuteSQL(sql1); //1. insert 문 실행, 새 글을 올립니다.
        conn.ExecuteSQL(sql2); //2. 글번호를 그룹 아이디 지정
        conn.Close();
    }
    private void Reply()
    {
        //1. 원래 글의 그룹 아이디, 깊이, 위치 정보를 구합니다.
        int groupid = int.Parse(Request["gr_id"]);
        int depth = int.Parse(Request["gr_depth"]);
        int pos = int.Parse(Request["gr_pos"]);

        //2. 답변이 들어갈 위치(pos)를 비우는 SQL문
        string sql1 = "update board set gr_pos=gr_pos+1 " + "where gr_id =" + groupid + "and gr_pos>" + pos;

        //3. 답변 글이므로, 원래 글의 깊이(depth)와 위치(pos)를 하나씩 증가시킵니다.
        depth++;
        pos++;

        //4. 답변 글을 추가하는 SQL 문
        string sql2 = "Insert into board (name, title, body, dtime, hit, gr_id, gr_depth, gr_pos) values ("
            + "'" + txtName.Text + "',"
            + "'" + txtTitle.Text + "',"
            + "'" + txtBody.Text + "',"
            + "'" + DateTime.Now.ToShortDateString() + "',0,"
            + groupid + "," + depth + "," + pos + ")";

        //5. 데이터 베이스 연결 및 실행
        DBConn conn = new DBConn();
        conn.Open();
        conn.ExecuteSQL(sql1); //글이 들어갈 위치 확보
        conn.ExecuteSQL(sql2); //답변 글 추가
        conn.Close();
    }
    private void update()
    {
        string sql = "update board Set "
            + "title='" + txtTitle.Text + "',"
            + "body  ='" + txtBody.Text + "',"
            + "whrere id = " + Request["id"];

        DBConn conn = new DBConn();

        conn.Open();
        conn.ExecuteSQL(sql);//글 업데이트
        conn.Close();

    }
    protected void btnSave_Click(object sender, ImageClickEventArgs e)
    {
        if (Request["mode"] == "Modify")
            update();
        else
            if (Request["mode"] == "Reply")
                Reply();
            else
                New();
         //목록보기
        Response.Redirect("list.aspx");
    }
      
    protected void btnList_Click(object sender, ImageClickEventArgs e)
    {
        Response.Redirect("list.aspx");                   
    }


}



Show.aspx

<body>
    <form id="form1" runat="server">
        <asp:Label id="Label4" runat="server" Width="454px" Height="20px" BackColor="#8080FF"   Font-Bold="True" BorderColor="Black" ForeColor="White" BorderWidth="1px" BorderStyle="Solid">글 보기</asp:Label>
        <br />
        <br />
        <table>
            <tr>
                <td style="width: 100px">
            <asp:Label id="Label2" runat="server" Width="68px" Height="18px" BackColor="Transparent"  >글번호 :</asp:Label>
                </td>
                <td style="width: 100px">
            <asp:label id="id" runat="server" Width="119px" Height="19px" BackColor="White"   BorderColor="Black" BorderWidth="1px"></asp:label>
                </td>
                <td style="width: 100px">
            <asp:Label id="Label7" runat="server" Width="76px" Height="18px" BackColor="Transparent"  >조회수 :</asp:Label>
                </td>
                <td style="width: 100px">
            <asp:label id="hit" runat="server" Width="118px" Height="19px" BackColor="White"   BorderColor="Black" BorderWidth="1px"></asp:label>
                </td>
            </tr>
            <tr>
                <td style="width: 100px">
            <asp:Label id="Label3" runat="server" Width="68px" Height="18px" BackColor="Transparent"  >글쓴이 :</asp:Label>
                </td>
                <td style="width: 100px">
            <asp:label id="name" runat="server" Width="118px" Height="19px" BackColor="White"   BorderColor="Black" BorderWidth="1px"></asp:label>
                </td>
                <td style="width: 100px">
            <asp:Label id="Label5" runat="server" Width="73px" Height="18px" BackColor="Transparent"  >올린 날짜 :</asp:Label>
                </td>
                <td style="width: 100px">
            <asp:label id="dtime" runat="server" Width="116px" Height="19px" BackColor="White"   BorderColor="Black" BorderWidth="1px"></asp:label>
                </td>
            </tr>
            <tr>
                <td style="width: 100px">
            <asp:Label id="Label6" runat="server" Width="68px" Height="18px" BackColor="Transparent"  >제목 :</asp:Label>
                </td>
                <td colspan="3">
            <asp:label id="title" runat="server" Height="19px" Width="341px" BackColor="White"   BorderColor="Black" BorderWidth="1px"></asp:label>
                </td>
            </tr>
            <tr>
                <td colspan="4">
            <asp:label id="body" runat="server" Height="110px" Width="450px" BackColor="White"   BorderColor="Black" BorderWidth="1px"></asp:label></td>
            </tr>
            <tr>
                <td style="width: 100px">

        <asp:ImageButton ID="btnList" runat="server" ImageUrl="~/Images/list.gif" OnClick="btnList_Click" /></td>
                <td style="width: 100px">
        <asp:ImageButton ID="btnModify" runat="server" ImageUrl="~/Images/modify.gif" OnClick="btnModify_Click" /></td>
                <td style="width: 100px">
        <asp:ImageButton ID="btnReply" runat="server" ImageUrl="~/Images/reply.gif" OnClick="btnReply_Click" /></td>
                <td style="width: 100px">
        <asp:ImageButton ID="btnDelete" runat="server" ImageUrl="~/Images/delete.gif" OnClick="btnDelete_Click" /></td>
            </tr>
        </table>
   
            <asp:label id="gr_pos" runat="server" Visible="False">gr_pos</asp:label>
            <asp:label id="gr_depth" runat="server" Visible="False">gr_depth</asp:label>
            <asp:label id="gr_id" runat="server" Visible="False">gr_id</asp:label>
    </form>
</body>



Show.aspx.cs

using System.Data.SqlClient;


public partial class show : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
         if (!IsPostBack)
        {
            string hitsql = "update board set hit=hit+1 where id=" + Request["id"];
            string sql = "SELECT * FROM Board where id = " + Request["id"];

            DBConn conn = new DBConn();
            conn.Open();

            //1. 조회수 증가시킨다.
            conn.ExecuteSQL(hitsql);

            //2. 해당 글 정보(제목,내용, 조회, 이름, 날짜)를 가져온다.
            SqlDataReader reader = conn.ExecuteReader(sql);

             //3.글 내용을 보여준다.
            if (reader.Read())
            {
                id.Text = reader["id"].ToString();
                hit.Text = reader["hit"].ToString();
                name.Text = reader["name"].ToString();
                dtime.Text = reader["dtime"].ToString();
                title.Text = reader["title"].ToString();

                string sbody = reader["body"].ToString();
                body.Text = sbody.Replace("\n", "<br>");

                gr_id.Text = reader["gr_id"].ToString();
                gr_depth.Text = reader["gr_depth"].ToString();
                gr_pos.Text = reader["gr_pos"].ToString();
            }

            reader.Close();
            conn.Close();
        }
    }
    protected void btnList_Click(object sender, ImageClickEventArgs e)
    {
        // 리스트 보기
        Response.Redirect("list.aspx");       
    }
    protected void btnModify_Click(object sender, ImageClickEventArgs e)
    {
        //수정하기.
        Response.Redirect("write.aspx?mode=modify&id=" + id.Text);       
    }
    protected void btnReply_Click(object sender, ImageClickEventArgs e)
    {
        //답변쓰기.
        string str = String.Format("write.aspx?mode=reply&id={0}&gr_id={1}&gr_depth={2}&gr_pos={3}",
            id.Text, gr_id.Text, gr_depth.Text, gr_pos.Text);

        Response.Redirect(str);       

    }
    protected void btnDelete_Click(object sender, ImageClickEventArgs e)
    {
        //삭제하기
        string sql = "delete from board where id = " + id.Text;

        DBConn conn = new DBConn();

        conn.Open();
        conn.ExecuteSQL(sql);
        conn.Close();

        Response.Redirect("list.aspx");
    }   
}



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