如何绑定gridview与来自两个不同表格的数据C＃

Question

如何绑定gridview与来自两个不同表格的数据？我有三张牌桌：球员，球员队伍和球队。我的gridview有下一个数据：玩家ID，姓名，姓氏......来自表格玩家，TeamID，TeamName ......来自另一个表格队伍。 Table PlayerTeam marge表球员和球队通过ID。我使用tableAdapter来解决这个问题。

当我想在gridview中编辑一些行时，我在表单中进行更改（更改文本框中的数据）并从下拉列表中选择Team，但我无法保存这些更改。

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 

namespace Rukomet 
{ 
    public partial class IgracUI : System.Web.UI.Page 
    { 
     dsIgrac.tblIgracRow igrac; 
     dsKlub.tblKlubRow klub; 


     protected void Page_Load(object sender, EventArgs e) 
     { 
      if (this.IsPostBack) 
       return; 
      this.UcitajKlub(); 
      this.dohvatiIgraca(); 
      this.prikaziIgracevePodatke(); 

     } 

     private void pokupiPodatkeSForme() 
     { 
      this.igrac.MaticniBroj = this.txtMaticniBroj.Text; 
      this.igrac.Ime = this.txtIme.Text; 
      this.igrac.Prezime = this.txtPrezime.Text; 
      this.igrac.BrojDresa = this.txtBrojDresa.Text; 
      this.igrac.Pogoci = Convert.ToInt32(this.txtPogoci.Text); 
      this.igrac.Opomene = Convert.ToInt32(this.txtOpomene.Text); 
      this.igrac.DvijeMinute = Convert.ToInt32(this.txtDvijeMinute.Text); 
      this.igrac.Diskvalifikacija = Convert.ToInt32(this.txtDiskvalifikacija.Text); 

      this.igrac.Lijecnicki = Convert.ToDateTime(this.txtLijecnicki.Text); 

      this.klub.KlubID = Convert.ToInt32(this.ddlKlubovi.SelectedValue); 

     } 

     private void prikaziIgracevePodatke() 
     { 
      if (igrac.IgracID == -1) 
       return; 

      this.txtMaticniBroj.Text = igrac.MaticniBroj; 
      this.txtIme.Text = igrac.Ime; 
      this.txtPrezime.Text = igrac.Prezime; 
      this.txtBrojDresa.Text = igrac.BrojDresa; 
      this.txtPogoci.Text = igrac.Pogoci.ToString(); 
      this.txtOpomene.Text = igrac.Opomene.ToString(); 
      this.txtDvijeMinute.Text = igrac.DvijeMinute.ToString(); 
      this.txtDiskvalifikacija.Text = igrac.Diskvalifikacija.ToString(); 

      this.txtLijecnicki.Text = igrac.Lijecnicki.ToShortDateString(); 


      if (this.ViewState["selected"] != null) 
      { 
       ddlKlubovi.SelectedValue = Convert.ToString(this.ViewState["selected"]); 
      } 

     } 

     private void dohvatiIgraca() 
     { 
      dsIgrac.tblIgracDataTable tblIgrac = new dsIgrac.tblIgracDataTable(); 

      if (Request.Params["IgracID"] == null) 
      { 
       this.igrac = tblIgrac.NewtblIgracRow(); 
       this.igrac.IgracID = -1; 
      } 
      else 
      { 
       dsIgracTableAdapters.tblIgracTableAdapter adapterIgrac = new dsIgracTableAdapters.tblIgracTableAdapter(); 

       int id = Convert.ToInt32(this.Request.Params["IgracID"]); 

       adapterIgrac.FillByIgracID(tblIgrac, id); 

       this.igrac = (dsIgrac.tblIgracRow)tblIgrac.Rows[0]; 
      } 
     } 


     void UcitajKlub() 
     { 
      dsIgrac.tblKlubDataTable Klub = new dsIgrac.tblKlubDataTable(); 

      dsIgracTableAdapters.tblKlubTableAdapter adapterKlub = new dsIgracTableAdapters.tblKlubTableAdapter(); 

      adapterKlub.Fill(Klub); 
      this.ddlKlubovi.DataTextField = "ImeKluba"; 
      this.ddlKlubovi.DataValueField = "KlubID"; 

      this.ddlKlubovi.DataSource = Klub; 
      this.ddlKlubovi.DataBind(); 
     } 

     protected void btnOdustani_Click(object sender, EventArgs e) 
     { 
      this.Response.Redirect("GlavnaForma.aspx"); 
     } 


     protected void btnSpremi_Click(object sender, EventArgs e) 
     { 
      this.dohvatiIgraca(); 
      this.pokupiPodatkeSForme(); 

      dsIgracTableAdapters.tblIgracTableAdapter adapterIgrac = new dsIgracTableAdapters.tblIgracTableAdapter(); 


      if (this.igrac.IgracID == -1) 
      { 
       adapterIgrac.Insert(
        this.igrac.MaticniBroj, 
        this.igrac.Ime, 
        this.igrac.Prezime, 
        this.igrac.BrojDresa, 
        this.igrac.Pogoci, 
        this.igrac.Opomene, 
        this.igrac.DvijeMinute, 
        this.igrac.Diskvalifikacija, 
        this.igrac.Lijecnicki); 
        this.klub.KlubID); 

      } 
      else 
      { 
       adapterIgrac.Update(this.igrac); 
      } 
      this.Response.Redirect("GlavnaForma.aspx"); 
     } 

    } 
} 

Answer 1

你应该发布代码以获得更好的答案，但我想我明白你在问什么。要做到这一点我使用C＃的WebGrid在HTML，查询三个表是这样的：

@{ 
var db=Database.Open("Contracts"); 
var selectCommand = "SELECT Requests.*, Contractors.Agency+'/'"+ 
        "+Contractors.FirstName+' '+Contractors.LastName as Contractor,Programs.Division "+ 
        "FROM Requests, Contractors, Programs "+ 
        "WHERE ContractNumber is not null "+ 
        "and ContractNumber <> '' "+ 
        "and ScannedContractDate is not null "+ 
        "and AmendmentCount = 0 "+ 
        "and Contractors.id = Requests.ContractorId "+ 
        "and Requests.programId = Programs.Id "; 
} 
<h2>Page Title</h2> 
<div>@grid.GetHtml(tableStyle: "grid", 
      headerStyle: "head", 
      alternatingRowStyle: "alt", 
      columns: grid.Columns(
      grid.Column("Division"), 
      grid.Column("ContractNumber", header:"Contract Number"), 
      grid.Column("Contractor"), 
      grid.Column("StartDate", header:"Start Date", canSort: true), 
      grid.Column("EndDate", header:"End Date", canSort: true), 
      grid.Column("Amount"), 
      grid.Column("ScannedContractDate", header:"Contract Date", canSort: true), 
      grid.Column("MaxAmend", header:"Amendments") 
      )) 
     </div> 

我希望回答您的问题！

Answer 2

你可以做的是使用连接或组子句并将结果绑定到上述数据网格视图。

请参考以下链接：

Link

Link2