Gridview只顯示第一條記錄

在我的網頁中，我能夠成功檢索所有記錄。我正在使用下拉列表根據不同的「狀態」過濾記錄。但是，它只顯示第一個檢索到的記錄。沒有任何例外或錯誤。當我在我的數據庫中運行查詢（以測試我的sql語句）時，有3個檢索到的記錄。我仍然無法確定我的代碼中出了什麼問題。Gridview只顯示第一條記錄

我正在研究一個三層web應用程序。

這裏是我的表示層代碼，

protected void ddl_status_SelectedIndexChanged(object sender, EventArgs e) 
    { 
     string status = ddl_status.SelectedItem.ToString(); 

      //Default 
      if (status == "Show All Submissions") 
      { 
       gv_combinedEntries.Visible = true; 
       SubmissionBLL sBLL = new SubmissionBLL(); 

       //Call getAllStudent() method in StudentBLL 
       List<Submission> subAll = new List<Submission>(); 

       subAll = sBLL.getAllSub(); 

       gv_combinedEntries.DataSource = subAll; 
       gv_combinedEntries.DataBind(); 
      } 

      else 
      { 
       SubmissionBLL subStatus = new SubmissionBLL(); 
       List<Submission> subList = new List<Submission>(); 
       subList = subStatus.getStatusList(status); 
       gv_combinedEntries.DataSource = subList; 
       gv_combinedEntries.DataBind(); 
      } 
    }

業務邏輯層：

public List<Submission> getStatusList(string statusPick) 
{ 
     List<Submission> specificStatus = new List<Submission>(); 
     Submission sub2 = new Submission(); 
     specificStatus = sub2.getStatusNewList(statusPick); 
     return specificStatus; 
}

數據訪問層：

public List<Submission> getStatusNewList(string statusSelected) 
    { 
     List<Submission> subStatus = new List<Submission>(); 
     string Id, School, TeamName, submissionDate, status; 

     string queryStr = "SELECT s.Id,c.School,c.TeamName,s.submissionDate, 
     c.submissionStatus FROM TeamSubmission s INNER JOIN Competition c 
     ON c.teamUsername = s.username WHERE submissionStatus = @enterStatus"; 

     SqlConnection conn = new SqlConnection(_connStr); 
     SqlCommand cmd = new SqlCommand(queryStr, conn); 

     cmd.Parameters.AddWithValue("@enterStatus", statusSelected); 

     conn.Open(); 
     SqlDataReader dr = cmd.ExecuteReader(); 

     if (dr.Read()) 
     { 
      Id = dr["Id"].ToString(); 
      School = dr["School"].ToString(); 
      TeamName = dr["TeamName"].ToString(); 
      submissionDate = dr["submissionDate"].ToString(); 
      status = dr["submissionStatus"].ToString(); 

      subStatus.Add(new Submission(Id, School, TeamName, submissionDate, status)); 
     } 

     conn.Close(); 
     dr.Close(); 
     dr.Dispose(); 

     return subStatus; 
    }

來源

2015-02-05 Enovyne

你有沒有通過您的代碼加強，並證實「子列表」或「subAll」有一個以上的價值？ – 2015-02-05 20:35:49

你需要改變你的如果（ dr.Read（））陳述了一會兒（dr.Read（））

while (dr.Read()) 
     { 
      Id = dr["Id"].ToString(); 
      School = dr["School"].ToString(); 
      TeamName = dr["TeamName"].ToString(); 
      submissionDate = dr["submissionDate"].ToString(); 
      status = dr["submissionStatus"].ToString(); 

      subStatus.Add(new Submission(Id, School, TeamName, submissionDate, status)); 
     }

來源

2015-02-05 21:55:36 Ockert

Gridview只顯示第一條記錄

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