C# 带checkbox和分页的GridView

Page_Load方法如下：

    protected void Page_Load(object sender, EventArgs e)
    {
      if (!IsPostBack)
      {
        //----------------------------------------------------------
        // CREATE TABLE
        //----------------------------------------------------------
        DataTable dt = new DataTable();
        dt.Columns.Add("A", System.Type.GetType("System.String"));
        dt.Columns.Add("B", System.Type.GetType("System.String"));
        dt.Columns.Add("C", System.Type.GetType("System.String"));

        //----------------------------------------------------------
        // SET DATA
        //----------------------------------------------------------
        for (int i = 0; i < 100; i++)
        {
          DataRow dr = dt.NewRow();
          dr["A"] = "A" + i.ToString();
          dr["B"] = "B" + i.ToString();
          dr["C"] = "C" + i.ToString();
          dt.Rows.Add(dr);
        }

        this.GridView1.DataSource = dt.DefaultView;
        this.GridView1.DataBind();

        for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
        {
          HtmlInputCheckBox cbox = (HtmlInputCheckBox)GridView1.Rows[i].FindControl("CheckBox1");
          cbox.Checked = false;
        }
      }
    }

 

GridView1_PageIndexChanging方法如下：

    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
      string strHiddenField1 = HiddenField1.Value;
      string[] arrHiddenField1 = strHiddenField1.Split(',');
      List<string> listAdd = new List<string>();

      for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
      {
        HtmlInputCheckBox cbox = (HtmlInputCheckBox)GridView1.Rows[i].FindControl("CheckBox1");
        if (cbox.Checked == false)
        {
          for (int j = 0; j < arrHiddenField1.Length; j++)
          {
            if (String.IsNullOrEmpty(arrHiddenField1[j]))
            {
              continue;
            }

            if (GridView1.Rows[i].Cells[1].Text.Equals(arrHiddenField1[j]))
            {
              arrHiddenField1[j] = "";
            }
          }
        }
        else
        {
          bool bolExist = false;
          for (int j = 0; j < arrHiddenField1.Length; j++)
          {
            if (String.IsNullOrEmpty(arrHiddenField1[j]))
            {
              continue;
            }

            if (GridView1.Rows[i].Cells[1].Text.Equals(arrHiddenField1[j]))
            {
              bolExist = true;
              break;
            }
          }

          if (!bolExist)
          {
            listAdd.Add(GridView1.Rows[i].Cells[1].Text);
          }
        }
      }

      strHiddenField1 = "";
      for (int i = 0; i < arrHiddenField1.Length; i++)
      {
        if (!String.IsNullOrEmpty(arrHiddenField1[i]))
        {
          strHiddenField1 += arrHiddenField1[i] + ",";
        }
      }
      for (int i = 0; i < listAdd.Count; i++)
      {
        if (!String.IsNullOrEmpty(listAdd[i]))
        {
          strHiddenField1 += listAdd[i] + ",";
        }
      }
      HiddenField1.Value = strHiddenField1;


      //----------------------------------------------------------
      // CREATE TABLE
      //----------------------------------------------------------
      DataTable dt = new DataTable();
      dt.Columns.Add("A", System.Type.GetType("System.String"));
      dt.Columns.Add("B", System.Type.GetType("System.String"));
      dt.Columns.Add("C", System.Type.GetType("System.String"));

      //----------------------------------------------------------
      // SET DATA
      //----------------------------------------------------------
      for (int i = 0; i < 100; i++)
      {
        DataRow dr = dt.NewRow();
        dr["A"] = "A" + i.ToString();
        dr["B"] = "B" + i.ToString();
        dr["C"] = "C" + i.ToString();
        dt.Rows.Add(dr);
      }

      this.GridView1.DataSource = dt.DefaultView;
      GridView1.PageIndex = e.NewPageIndex;
      GridView1.DataBind();

      arrHiddenField1 = strHiddenField1.Split(',');
      for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
      {
        HtmlInputCheckBox cbox = (HtmlInputCheckBox)GridView1.Rows[i].FindControl("CheckBox1");
        bool bolCheck = false;
        for (int j = 0; j < arrHiddenField1.Length; j++)
        {
          if (arrHiddenField1[j].Equals(GridView1.Rows[i].Cells[1].Text))
          {
            bolCheck = true;
            break;
          }
        }
        if (bolCheck)
        {
          cbox.Checked = true;
        }
      }
    }

 

前台如下：

<body>
  <form id="form1" runat="server">
  <asp:HiddenField ID="HiddenField1" runat="server" />
  <div>
    <asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"
      OnPageIndexChanging="GridView1_PageIndexChanging">
      <Columns>
        <asp:TemplateField>
          <ItemTemplate>
            <input id="CheckBox1" type="checkbox" runat="server" />
          </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="A" HeaderText="A" />
        <asp:BoundField DataField="B" HeaderText="B" />
        <asp:BoundField DataField="C" HeaderText="C" />
      </Columns>
    </asp:GridView>
  </div>
  </form>
</body>