【发布时间】：2015-04-14 04:18:22
【问题描述】：
我正在使用带有 GridView 的 ObjectDataSource，如下所示。它包含在 UpdatePanel 中。当用户按下此 UpdatePanel 外部的按钮时，它应该通过向 ObjectSource Select 方法提供一些种子值来填充网格视图。该部分工作正常 - 调用 Select 方法时，gridView 成功初始化。当用户继续按下 Edit 按钮时，gridView 也成功地转换为带有可编辑 TextBox 控件的编辑模式。该部分也可以正常工作，但是我尝试在此转换期间检查 GridViewRow.Cell[i].Text 和 GridViewRow.Cell[i].Controls[j] 值，并且对于 gridview 中的每个单元格，它始终为 NULL .
最后，当在底层 ObjectSource 上调用 Update 方法时，传递给 Update 方法的所有参数实际上都是 NULL。简而言之，即使用户看到单元格的内容，代码也永远无法捕获此内容 - 它只接收 NULL。请注意，我在 !PostBack 以及 RowEditing 和 RowUpdating 事件期间在 objectsource 上实现了几个 DataBinds。
任何想法为什么我无法捕获这些单元格中的字符串内容？
这里是标记：
<asp:UpdatePanel ID="PgimUpdatePanel" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:HiddenField ID="hdnShowPgim" runat="server"/>
<div id="jsPgimPanel">
<asp:ObjectDataSource ID="pgimObjectSource" Runat="server" TypeName="CarePlanModifier.Models.PgimMapping" SelectMethod="GetPgims" EnablePaging="True" SelectCountMethod="TotalNumberOfPgims" UpdateMethod="UpdatePgims" InsertMethod="UpdatePgims" DeleteMethod="SoftDeletePgims" OnUpdating="pgimObjectSource_Updating" OnSelecting="pgimObjectSource_Selecting" >
<SelectParameters>
<asp:querystringparameter name="MatchCode" querystringfield="MatchCode" defaultvalue="0" />
<asp:querystringparameter name="CprId" querystringfield="CprId" defaultvalue="0" />
<asp:querystringparameter name="SessionUser" querystringfield="SessionUser" defaultvalue="0" />
</SelectParameters>
<UpdateParameters>
<asp:Parameter Type="Int32" Name="Id"></asp:Parameter>
<asp:Parameter Type="String" Name="Icd1Code"></asp:Parameter>
<asp:Parameter Type="String" Name="MatchCode"></asp:Parameter>
<asp:Parameter Type="String" Name="Problems"></asp:Parameter>
<asp:Parameter Type="String" Name="Goals"></asp:Parameter>
<asp:Parameter Type="String" Name="Interventions"></asp:Parameter>
<asp:Parameter Type="Int32" Name="CprId"></asp:Parameter>
<asp:Parameter Type="String" Name="EditUser"></asp:Parameter>
</UpdateParameters>
</asp:ObjectDataSource>
<asp:GridView ID="gridPgim" Runat="server" DataSourceID="pgimObjectSource" AutoGenerateColumns="False" AllowPaging="True" BorderWidth="1px" BackColor="White" CellPadding="3" BorderStyle="Solid" BorderColor="#999999" ForeColor="Black" GridLines="Vertical" pagesize="10" OnRowEditing="gridPgim_RowEditing" OnRowCancelingEdit="gridPgim_RowCancelingEdit" OnRowUpdating="gridPgim_RowUpdating" OnRowCommand="gridPgim_RowCommand" DataKeyNames="Id, MatchCode,CprId, EditUser">
<FooterStyle BackColor="#CCCCCC" />
<HeaderStyle Font-Bold="True" BackColor="Black" ForeColor="White" />
<AlternatingRowStyle BackColor="#CCCCCC" />
<Columns>
<asp:CommandField ShowEditButton="True" ShowDeleteButton="False" ></asp:CommandField>
<asp:BoundField Visible="false" ReadOnly="True" HeaderText="Id" InsertVisible="False" DataField="Id" SortExpression="Id"></asp:BoundField>
<asp:BoundField Visible="false" ReadOnly="True" HeaderText="Icd1Code" DataField="Icd1Code" SortExpression="Icd1Code"></asp:BoundField>
<asp:BoundField Visible="false" ReadOnly="True" HeaderText="MatchCode" DataField="MatchCode" SortExpression="MatchCode"></asp:BoundField>
<asp:BoundField Visible="false" ReadOnly="True" HeaderText="CprId" InsertVisible="False" DataField="CprId" SortExpression="CprId"></asp:BoundField>
<asp:BoundField Visible="false" ReadOnly="True" HeaderText="EditUser" InsertVisible="False" DataField="EditUser" SortExpression="EditUser"></asp:BoundField>
<asp:TemplateField HeaderText="Problems" SortExpression="Problems">
<EditItemTemplate>
<asp:TextBox ID="txtProblems" TextMode="MultiLine" runat="server" TextWrapping="Wrap" Rows="4"
AcceptsReturn="False" VerticalScrollBarVisibility="Visible"
Text='<%# Bind("Problems") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblEditProblems" runat="server" Text='<%# Bind("Problems") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Goals" SortExpression="Goals">
<EditItemTemplate>
<asp:TextBox ID="txtGoals" runat="server" TextMode="MultiLine" TextWrapping="Wrap" Rows="4" AcceptsReturn="False" VerticalScrollBarVisibility="Visible" Text='<%# Bind("Goals") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblEditGoals" runat="server" Text='<%# Bind("Goals") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Interventions" SortExpression="Interventions">
<EditItemTemplate>
<asp:TextBox ID="txtInterventions" runat="server" TextMode="MultiLine" TextWrapping="Wrap" Rows="4" AcceptsReturn="False" VerticalScrollBarVisibility="Visible" Text='<%# Bind("Interventions") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblEditInterventions" runat="server" Text='<%# Bind("Interventions") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<PagerStyle BackColor="#999999" ForeColor="Black" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#F1F1F1" />
<SortedAscendingHeaderStyle BackColor="#808080" />
<SortedDescendingCellStyle BackColor="#CAC9C9" />
<SortedDescendingHeaderStyle BackColor="#383838" />
</asp:GridView>
</div>
<script type="text/javascript" src="Scripts/jquery.jspanel.min.js"></script>
<link rel="stylesheet" type="text/css" href="Scripts/jquery.jspanel.min.css"/>
<link rel="stylesheet" type="text/css" href="Scripts/jsglyph.css"/>
<script type="text/javascript">
var pgim;
function clearPanel() {
//alert('0');
pgim.close();
//alert('1');
};
function displayPanel() {
//alert('0');
if (pgim != null) {
pgim.close();
}
//alert('1');
pgim = $.jsPanel({
content: $('div#jsPgimPanel'),
title: "PGIM",
position: "center right",
theme: "light",
overflow: 'visible',
size: { width: 800, height: 450 },
});
};
function rePanel() {
alert('3');
pgim.reloadContent();
alert('4');
};
</script>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="gridDiagnoses" EventName="RowCommand"/>
</Triggers>
</asp:UpdatePanel>
下面是代码隐藏事件方法：
protected void btnFindPgim_Load(object sender, EventArgs e)
{
LinkButton btn = (LinkButton)sender;
//PgimUpdatePanel.Triggers.Add(new PostBackTrigger{ ControlID=btn.UniqueID });
PgimUpdatePanel.Triggers.Add(new AsyncPostBackTrigger { ControlID = btn.UniqueID, EventName = "Click" });
}
protected void gridPgim_RowEditing(object sender, GridViewEditEventArgs e)
{
//Set the edit index.
gridPgim.EditIndex = e.NewEditIndex;
string diagCode = hdnSelectedDiagCode.Value;
int cprId = Convert.ToInt32(hdnCprId.Value);
CarePlanReview xCpr = (CarePlanReview)Request.RequestContext.HttpContext.Session["xCpr"];
displayFiles(Convert.ToInt32(hdnCprId.Value), xCpr.Client);
//GridView gv = (GridView)sender;
//gv.EditIndex = e.NewEditIndex;
//gv.DataBind();
BindPgimGrid(diagCode, cprId);
//ScriptManager.RegisterStartupScript(Page, typeof(Page), "jsPanel", "clearPanel();", true);
ScriptManager.RegisterStartupScript(Page, typeof(Page), "jsPanel", "displayPanel();", true);
//ScriptManager.RegisterStartupScript(Page, typeof(Page), "jsPanel", "rePanel();", true);
}
protected void gridPgim_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
CarePlanReview xCpr = (CarePlanReview)Request.RequestContext.HttpContext.Session["xCpr"];
displayFiles(Convert.ToInt32(hdnCprId.Value), xCpr.Client);
//Reset the edit index.
gridPgim.EditIndex = -1;
ScriptManager.RegisterStartupScript(Page, typeof(Page), "jsPanel", "clearPanel();", true);
}
protected void gridPgim_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
ISession session = HiHibernateUtil.GetCurrentSession();
CarePlanReview xCpr = (CarePlanReview)Request.RequestContext.HttpContext.Session["xCpr"];
try
{
PgimMapping pm = new PgimMapping();
if (e.NewValues["Problems"] != null)
{
pm.Problems = (string)e.NewValues["Problems"];
}
GridView gv = (GridView)sender;
for (int i = 0; i < gv.Columns.Count; i++)
{
DataControlFieldCell cell = gv.Rows[e.RowIndex].Cells[i] as DataControlFieldCell;
gv.Columns[i].ExtractValuesFromCell(e.NewValues, cell, DataControlRowState.Edit, true);
}
foreach (DictionaryEntry de in e.NewValues)
{
string dkey = (string)de.Key;
if ( dkey.Equals("Icd1Code", StringComparison.CurrentCultureIgnoreCase) )
{
pm.Icd1Code = (string)de.Value;
}
if (dkey.Equals("CprId", StringComparison.CurrentCultureIgnoreCase))
{
pm.CprId = Convert.ToInt32((string)de.Value);
}
if (dkey.Equals("MatchCode", StringComparison.CurrentCultureIgnoreCase))
{
pm.MatchCode = (string)de.Value;
}
if (dkey.Equals("MatchCode", StringComparison.CurrentCultureIgnoreCase))
{
pm.MatchCode = (string)de.Value;
}
if (dkey.Equals("Problems", StringComparison.CurrentCultureIgnoreCase))
{
pm.Problems = (string)de.Value;
}
if (dkey.Equals("Goals", StringComparison.CurrentCultureIgnoreCase))
{
pm.Goals = (string)de.Value;
}
if (dkey.Equals("Interventions", StringComparison.CurrentCultureIgnoreCase))
{
pm.Interventions = (string)de.Value;
}
}
if (pm.CprId < 1)
{
throw new Exception("ERROR the 'cprId' value is invalid for " + pm.CprId);
}
if (String.IsNullOrEmpty(pm.Problems) || pm.Problems.Length < 3)
{
throw new Exception("ERROR the 'problem' value is empty for " + pm.MatchCode);
}
if (String.IsNullOrEmpty(pm.Goals) || pm.Goals.Length < 3)
{
throw new Exception("ERROR the 'goal' value is empty for " + pm.MatchCode);
}
pm.GmtOffset = Convert.ToInt32(Utility.getAppSetting("gmtOffset"));
pm.Active = 0;
pm.AddedDate = DateTime.Now;
pm.EditUser = xCpr.SessionUser.Username;
// now add the PGIM to this Care Plan
CareNeeds cneeds = new CareNeeds();
cneeds.Active = 0;
cneeds.CprId = pm.CprId;
cneeds.EditUser = pm.EditUser;
cneeds.GmtOffset = Convert.ToInt32(Utility.getAppSetting("gmtOffset"));
cneeds.Goal = pm.Goals;
cneeds.Problem = pm.Problems;
cneeds.Interventions = pm.Interventions;
cneeds.AddedDate = DateTime.Now;
using (ITransaction txn = session.BeginTransaction())
{
session.Save(pm);
session.Save(cneeds);
txn.Commit();
}
//Reset the edit index.
gridPgim.EditIndex = -1;
}
catch (System.Exception ee)
{
log.Error("gridPgim_RowUpdating() " + ee.Message);
log.Error("gridPgim_RowUpdating() " + ee.StackTrace);
LabelErrorMessages2.CssClass = "errorlabel";
LabelErrorMessages2.Text = LabelErrorMessages.Text + " " + ee.Message;
}
finally
{
session.Flush();
session.Close();
}
}
protected void gridPgim_RowCommand(Object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Update")
{
BindPgimGrid(hdnSelectedDiagCode.Value, Convert.ToInt32(hdnCprId.Value));
GridViewRow row = gridPgim.Rows[gridPgim.EditIndex];
} else if ( e.CommandArgument == "Edit" )
{
}
ScriptManager.RegisterStartupScript(Page, typeof(Page), "jsPanel", "displayPanel();", true);
}
最后，这里是 DAL 对象（它也映射到 nHibernate 映射），但删除了一些方法以缩短这篇文章。
public class PgimMapping
{
private static readonly log4net.ILog log = LogManager.GetLogger(typeof(PgimMapping));
public PgimMapping(string diagCode, int cprId, string suser)
{
this.matchCode = diagCode;
this.cprId = cprId;
this.sessionUser = suser;
}
private string sessionUser = null;
private string matchCode = null;
public string MatchCode
{
get { return matchCode; }
set { matchCode = value; }
}
private int id = 0;
public virtual int Id
{
get { return id; }
set { id = value; }
}
private string icd1Code = null;
public virtual string Icd1Code
{
get { return icd1Code; }
set { icd1Code = value; }
}
private string icd9Code = null;
public virtual string Icd9Code
{
get { return icd9Code; }
set { icd9Code = value; }
}
private string description = null;
public virtual string Description
{
get { return description; }
set { description = value; }
}
private string problems = null;
public virtual string Problems
{
get { return problems; }
set { problems = value; }
}
private string goals = null;
public virtual string Goals
{
get { return goals; }
set { goals = value; }
}
private string interventions = null;
public virtual string Interventions
{
get { return interventions; }
set { interventions = value; }
}
private string measures = null;
public virtual string Measures
{
get { return measures; }
set { measures = value; }
}
private string discussWDr = null;
public virtual string DiscussWDr
{
get { return discussWDr; }
set { discussWDr = value; }
}
private string memberProblems = null;
public virtual string MemberProblems
{
get { return memberProblems; }
set { memberProblems = value; }
}
private string memberGoals = null;
public virtual string MemberGoals
{
get { return memberGoals; }
set { memberGoals = value; }
}
private DateTime? addedDate = null;
public virtual DateTime? AddedDate
{
get { return addedDate; }
set { addedDate = value; }
}
private string editUser = null;
public virtual string EditUser
{
get { return editUser; }
set { editUser = value; }
}
private DateTime? modifyDate = null;
public virtual DateTime? ModifyDate
{
get { return modifyDate; }
set { modifyDate = value; }
}
private int gmtOffset = 0;
public virtual int GmtOffset
{
get { return gmtOffset; }
set { gmtOffset = value; }
}
private int active = 0;
public virtual int Active
{
get { return active; }
set { active = value; }
}
private int cprId = 0;
public int CprId
{
get { return cprId; }
set { cprId = value; }
}
public void UpdatePgims(int Id, string Icd1Code, string MatchCode, int CprId, string Problems, string Goals, string Interventions, string EditUser)
{
ISession session = HiHibernateUtil.GetCurrentSession();
try
{
if (CprId < 1)
{
throw new Exception("ERROR the 'cprId' value is invalid for " + CprId);
}
if (String.IsNullOrEmpty(Problems) || Problems.Length < 3)
{
throw new Exception("ERROR the 'problem' value is empty for " + MatchCode);
}
if (String.IsNullOrEmpty(Goals) || Goals.Length < 3)
{
throw new Exception("ERROR the 'goal' value is empty for " + MatchCode);
}
PgimMapping pm = new PgimMapping(Icd1Code, CprId, EditUser);
pm.GmtOffset = Convert.ToInt32(Utility.getAppSetting("gmtOffset"));
pm.Goals = Goals;
pm.Problems = Problems;
pm.Interventions = Interventions;
pm.Icd1Code = Icd1Code;
pm.Active = 0;
pm.AddedDate = DateTime.Now;
pm.CprId = CprId;
pm.MatchCode = MatchCode;
pm.sessionUser = EditUser;
// now add the PGIM to this Care Plan
CareNeeds cneeds = new CareNeeds();
cneeds.Active = 0;
cneeds.CprId = CprId;
cneeds.EditUser = EditUser;
cneeds.GmtOffset = Convert.ToInt32(Utility.getAppSetting("gmtOffset"));
cneeds.Goal = Goals;
cneeds.Problem = Problems;
cneeds.Interventions = Interventions;
cneeds.AddedDate = DateTime.Now;
using (ITransaction txn = session.BeginTransaction())
{
session.Save(pm);
session.Save(cneeds);
txn.Commit();
}
}
catch (Exception ee)
{
log.Error("UpdatePgims() " + ee.Message);
log.Error("UpdatePgims() " + ee.StackTrace);
}
finally
{
session.Flush();
session.Close();
}
}
}
【问题讨论】：
标签： c# asp.net gridview objectdatasource