Asp.net、jQuery和动态内容

我有一个asp.net站点，我在其中通过动态方式在DataGrid中创建演示文件。 接下来，我必须检查quantity动态字段中的值是否为null、是否不是数字、是否为负数等等

我想在单击发送按钮时检查它，我想使用jQuery脚本来完成这项工作；问题是：如何检索动态文本框的id？在html页面中，它们每个都有一个前缀，我不想使用循环。 例如：

 protected void DettOrdGridView_RowDataBound(object sender, GridViewRowEventArgs e)
        {...
          e.Row.Cells.Add(cellQta); //here i add a cell to the row of the grid
           ...
        }

在html页面中：

    $(document).ready(function){
        $("#btnSaveProvvisorio").delegate("textbox", "change", function(){
            var jtbNumBollaQuin;
            jtbNumBollaQuin=$('#<%=myTextBoxQta.ClientID%>').text();
            alert("Valore quantita : " + jtbNumBollaQuin); 
        })
       }

谢谢大家!

Here the aspx.net code:
 protected void DettOrdGridView_RowDataBound(object sender, GridViewRowEventArgs e)
        {


...


myTextBoxQta = new TextBox();
                myTextBoxQta.ID = "myTextBoxQta";
                myTextBoxQta.Attributes.Add("nomeTextBox", "myTextBoxQta");
                myTextBoxQta.Attributes.Add("runat", "server");
                myTextBoxQta.Attributes.Add("onChange", "javascript:TotaliOrdDett();");
                myTextBoxQta.Style["text-align"] = "center";


i = e.Row.Cells.Count;
                i = i - 1;
                //Column label
                if (e.Row.RowIndex == -1)
                {
                    if (risultato > 0) 
                    {...
                    }
else //...add a textbox
                {


                    myOracleConnection = myDbClass.dbConnessione("myconn");
                    //System.Diagnostics.Debug.WriteLine("Cella: " + e.Row.Cells[0].Text);
                    myQuery = "SELECT QTA_NR, KG_LORDI FROM TABLE WHERE SOC='1' AND ORD=" + ordHidden.Value + " AND ROW_ORD=" + e.Row.Cells[0].Text;
                    qtaKgInseriti = myDbClass.EseguiSqlSelect(myQuery, myOracleConnection, qtaKgInseriti);
                    myDbClass.dbDisconnessione(myOracleConnection);


                    e.Row.Cells[i].Controls.Add(myTextBoxQta);
                    cellQta.Controls.Add(myTextBoxQta);
                    e.Row.Cells.Add(cellQta);
                    //myTextBoxQta.Text = e.Row.RowIndex.ToString();
                    if (risultato > 0)
                    {
                        myTextBoxQta.Text = qtaKgInseriti.Tables[0].Rows[0]["QTA_NR"].ToString();
                        txtSumQta.Text = (Int32.Parse(txtSumQta.Text) + Int32.Parse(myTextBoxQta.Text)).ToString();
                    }
                    e.Row.Cells[i].Controls.Add(myTextBoxKg);
                    cellKg.Controls.Add(myTextBoxKg);
                    e.Row.Cells.Add(cellKg);
                    //myTextBoxKg.Text = e.Row.RowIndex.ToString();
                    if (risultato > 0)
                    {
                        myTextBoxKg.Text = qtaKgInseriti.Tables[0].Rows[0]["KG_LORDI"].ToString();
                        txtSumKg.Text = (Double.Parse(txtSumKg.Text) + Double.Parse(myTextBoxKg.Text)).ToString();
                    }


                    myCompValNr = new CompareValidator();
                    myCompValNr.ID = "myCompValNr";
                    myCompValNr.ErrorMessage = "<div style=\"font-size: x-small; text-align: center; color: #FF0000\">Please enter a number grater than zero!</div>";
                    myCompValNr.ControlToValidate = "myTextBoxQta";
                    myCompValNr.Type = ValidationDataType.Integer;
                    myCompValNr.Operator = ValidationCompareOperator.GreaterThan;
                    myCompValNr.ValueToCompare = "0";
                    myCompValNr.Display = ValidatorDisplay.Dynamic;
                    e.Row.Cells[i + 1].Controls.Add(myCompValNr);

                    myReqFvNr = new RequiredFieldValidator();
                    myReqFvNr.ControlToValidate = myTextBoxQta.ID;
                    myReqFvNr.Text = "<div style=\"font-size: x-small; text-align: center; color: #FF0000\">Field Qta cannot be null!</div>";
                    e.Row.Cells[i + 1].Controls.Add(myReqFvNr);


                    myCompValKg = new CompareValidator();
                    myCompValKg.ID = "myCompValKg";
                    myCompValKg.ErrorMessage = "<div style=\"font-size: x-small; text-align: center; color: #FF0000\">Please enter a number grater than zero!</div>";
                    myCompValKg.ControlToValidate = "myTextBoxKg";
                    myCompValKg.Type = ValidationDataType.Double;
                    myCompValKg.Operator = ValidationCompareOperator.GreaterThan;
                    myCompValKg.ValueToCompare = "0";
                    myCompValKg.Display = ValidatorDisplay.Dynamic;
                    e.Row.Cells[i + 2].Controls.Add(myCompValKg);

                    myReqFvKg = new RequiredFieldValidator();
                    myReqFvKg.ControlToValidate = myTextBoxKg.ID;
                    myReqFvKg.Text = "<div style=\"font-size: x-small; text-align: center; color: #FF0000\">Field Kg cannot be null!</div>";
                    e.Row.Cells[i + 2].Controls.Add(myReqFvKg);

                }





        }

并设置myTextBoxQta.CssClass=“MyTextBoxClass”；在aspx.cs文件中 并将ClientMode=“Static”添加到aspx文件中的btnSaveProvvisorio按钮

非常感谢！！！

---

Igor

您可以像这样使用

数据属性

<textarea data-clientId="#<%=myTextBoxQta.ClientID%>" ></textarea>

同时检查页面中是否存在
id

您的页面上不存在名为

myTextBoxQta

的ASP.NET控件。。。控件的标记上可能没有

runat=“server”

使用

.on

代替

.delegate

• 更新*

在查看代码之后，您应该通过CSS类来测试代码的工作情况

myTextBoxQta.CssClass = "MyTextBoxClass";

然后

$(document).ready(function){
     $("#btnSaveProvvisorio").delegate("textbox", "change", function(){
         var jtbNumBollaQuin;
         jtbNumBollaQuin=$('.MyTextBoxClass').text();
         alert("Valore quantita : " + jtbNumBollaQuin); 
     })
}

---

您的页面上不存在名为myTextBoxQta的ASP.NET控件。。。它上面可能没有runat=“server”。克里斯，我把标签放在：myTextBoxQta=newtextbox（）；myTextBoxQta.ID=“myTextBoxQta”；添加（“nomeTextBox”、“myTextBoxQta”）；添加（“runat”、“server”）；添加（“onChange”，“javascript:totaliordett（）；”；myTextBoxQta.Style[“文本对齐”]=“居中”；啊，我现在明白了。我已经更新了我的答案。

$(document).ready(function){
   $("#btnSaveProvvisorio").delegate("textbox", "change", function(){
       var jtbNumBollaQuin;
       jtbNumBollaQuin=$($(this).data('clientId')).text();
       alert("Valore quantita : " + jtbNumBollaQuin); 
   });
});// check end of document.ready()

myTextBoxQta.CssClass = "MyTextBoxClass";

$(document).ready(function){
     $("#btnSaveProvvisorio").delegate("textbox", "change", function(){
         var jtbNumBollaQuin;
         jtbNumBollaQuin=$('.MyTextBoxClass').text();
         alert("Valore quantita : " + jtbNumBollaQuin); 
     })
}