DataList分页与搜索结果

Question

我有一个DataList来显示吨的项目，所以我使用分页和搜索方法，以便过滤和使它更容易，两者都工作正常。然而，搜索后，当涉及到传呼，数据将回（SELECT *），但没有具体的项目IM搜索

是我迄今所做的：

SqlDataAdapter adap; 
    DataSet ds; 
    PagedDataSource adsource; 
    int pos; 

protected void Page_Load(object sender, EventArgs e) 
    { 
     if (!Page.IsPostBack) 
     { 
      this.ViewState["vs"] = 0; 
      pos = (int)this.ViewState["vs"]; 

      databind(); 
      databind2(); 
     } 
    } 

public void databind() 
    { 
     adap = new SqlDataAdapter("select p.item_code as pitem, i.LongDesc as longname, p.SellPrice_1 as normalprice, p.SellPrice_2 as memberprice from plu p inner join item i on p.item_code = i.item_code WHERE p.publish =1 order by i.LongDesc", constr); 
     ds = new DataSet(); 
     adsource = new PagedDataSource(); 
     adap.Fill(ds); 
     adsource.DataSource = ds.Tables[0].DefaultView; 
     adsource.PageSize = 16; 
     adsource.AllowPaging = true; 
     adsource.CurrentPageIndex = pos; 
     CategoryList.DataSource = adsource; 
     CategoryList.DataBind(); 
    } 

滤波部分，如下所示

public void Filter_Command(Object source, DataListCommandEventArgs e) 
    { 
     if (e.CommandName.Equals("Filter")) 
     { 
      adap = new SqlDataAdapter("select p.item_code as pitem, i.LongDesc as longname, p.SellPrice_1 as normalprice, p.SellPrice_2 as memberprice, d.department_code as dcode, d.category_code as dcatecode, c.category_code as ccode from plu p inner join item i on p.item_code = i.item_code inner join EPO_PDU_department d on d.department_code = i.department_code inner join EPO_PDU_Category c on c.category_code = d.category_code WHERE p.publish =1 AND c.category_code = '" + e.CommandArgument.ToString() + "'order by i.LongDesc ", constr); 
      ds = new DataSet(); 
      adsource = new PagedDataSource(); 
      adap.Fill(ds); 
      adsource.DataSource = ds.Tables[0].DefaultView; 
      adsource.PageSize = 16; 
      adsource.AllowPaging = true; 
      adsource.CurrentPageIndex = pos; 
      btnprevious.Enabled = !adsource.IsFirstPage; 
      btnnext.Enabled = !adsource.IsLastPage; 
      CategoryList.DataSource = adsource; 
      CategoryList.DataBind(); 
     } 
    } 

按钮，我用：

protected void btnprevious_Click(object sender, EventArgs e) 
    { 
     pos = (int)this.ViewState["vs"]; 
     pos -= 1; 
     this.ViewState["vs"] = pos; 
     databind(); 
    } 

    protected void btnnext_Click(object sender, EventArgs e) 
    { 
     pos = (int)this.ViewState["vs"]; 
     pos += 1; 
     this.ViewState["vs"] = pos; 
     databind(); 
    } 

搜索和呼叫正在没有彼此罚款。但我希望他们一起工作。感谢

******* UPDATE *******

的情况下，里克 - 需要更多的信息

Answer 1

让你数据绑定应用过滤器，如果有的话

public void databind(string filter = null) 
{ 
    var filterQuery = ""; 
    if(!string.IsNullOrEmpty(filter)){ 
     filterQuery = " AND c.category_code = '" + filter + "'"; 
     this.ViewState.ContainsKey("filter") 
      ? this.ViewState["filter"] = filter 
      : this.ViewState.Add("filter", filter); 
    } 

    var query = "select p.item_code as pitem, i.LongDesc as longname, p.SellPrice_1 as normalprice, p.SellPrice_2 as memberprice from plu p inner join item i on p.item_code = i.item_code WHERE p.publish =1"; 
    query += filterQuery; 
    query += " order by i.LongDesc"; 

    adap = new SqlDataAdapter(query, constr); 
    ds = new DataSet(); 
    adsource = new PagedDataSource(); 
    adap.Fill(ds); 
    adsource.DataSource = ds.Tables[0].DefaultView; 
    adsource.PageSize = 16; 
    adsource.AllowPaging = true; 
    adsource.CurrentPageIndex = pos; 
    CategoryList.DataSource = adsource; 
    CategoryList.DataBind(); 
} 

，然后筛选命令：

public void Filter_Command(Object source, DataListCommandEventArgs e) 
{ 
    string filter = e.CommandName.Equals("Filter") ? e.CommandArgument.ToString() : null; 
    databind(filter); 
} 

和你的按钮

protected void btnprevious_Click(object sender, EventArgs e) 
{ 
    pos = (int)this.ViewState["vs"]; 
    pos -= 1; 
    this.ViewState["vs"] = pos; 
    databind(this.ViewState["filter"]); 
} 

protected void btnnext_Click(object sender, EventArgs e) 
{ 
    pos = (int)this.ViewState["vs"]; 
    pos += 1; 
    this.ViewState["vs"] = pos; 
    databind(this.ViewState["filter"]); 
} 

确保this.ViewState["filter"]定义（你可以做与你的相同this.ViewState["vs"]

Answer 2

您可以创建一个通用的数据绑定功能，将期望参数搜索也。然后到处使用这个功能。