如何处理动态表内的动态文本框？

Question

我想从同一列中的文本框求和（添加）值，并分别显示SUM到最后一行文本框，点击“计算”按钮
所有的文本框都是通过点击“创建表”按钮动态生成的。

我没有得到如何获得这些文本框的ID。

.aspx文件的代码如下：

<asp:Label ID="lblTest" runat="server"></asp:Label> 
    &nbsp;<asp:Label ID="Label1" runat="server"></asp:Label> 
    <br /> 
    <br /> 
    Select CC No :&nbsp; 
    <asp:DropDownList ID="DropDownList1" runat="server" 
     onselectedindexchanged="DropDownList1_SelectedIndexChanged" Width="100px"> 
     <asp:ListItem>2</asp:ListItem> 
     <asp:ListItem>3</asp:ListItem> 
     <asp:ListItem>4</asp:ListItem> 
     <asp:ListItem>5</asp:ListItem> 
     <asp:ListItem>6</asp:ListItem> 
    </asp:DropDownList> 
&nbsp;<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Create Table" 
     style="height: 26px" Width="100px" /> 

代码是这样的动态表否文本框在aspx.cs文件：

public partial class stable : System.Web.UI.Page 
{ 
private int tblRow; 
private int tblCol = 9; 
private int i, j; 
private bool CTflag; 

Table table = new Table(); 
TableRow row,rrow; 
TableCell cell,rcell; 
FileUpload fileUp; 
Button UpLdButton; 
TextBox tb,tbr; 
TextBox txtRes; // to store result of calculation 

string cmdArg; // for passing filuploaders id with Command button 
string txtArgs; 

private string filename = "fileUpLoader"; 

private string tbRowId = "row"; 
private string tbColId = "col"; 

protected int Rows 
{ 
    get 
    { 
     return ViewState["Rows"] != null ? (int)ViewState["Rows"] : 0; 
    } 
    set 
    { 
     ViewState["Rows"] = tblRow; 
    } 
} 

// Columns property to hold the Columns in the ViewState 
protected int Columns 
{ 
    get 
    { 
     return ViewState["Columns"] != null ? (int)ViewState["Columns"] : 0; 
    } 
    set 
    { 
     ViewState["Columns"] = tblCol; 
    } 
} 

protected void Page_Load(object sender, EventArgs e) 
{ 
    if (Page.IsPostBack) 
    { 
     this.Rows = tblRow; 
     this.Columns = tblCol; 
     if (CTflag == false) 
     { 
      CreateDynamicTable(); 
     } 
     else 
     { 
      CTflag = true; 
     } 
    } 
    //LoadViewState(object this); 
    //CreateDynamicTable(); 
} 
protected void Button1_Click(object sender, EventArgs e) 
{ 
    //Button1.Visible = false; 
    CreateDynamicTable(); 
} 

protected void Button1_Click(object sender, EventArgs e) 
{ 
    CreateDynamicTable(); 
} 

protected void CreateDynamicTable() 
{ 
    //Button1.Visible = false; 
    tblRow = Convert.ToInt32(DropDownList1.SelectedValue); 
    //Creat the Table and Add it to the Page  
    if (CTflag == false) 
    { 
     //Table table = new Table(); 
     table.Caption = "Challan Entry"; 
     table.ID = "Challan Entry"; 
     table.BackColor = System.Drawing.Color.BurlyWood; 
     Page.Form.Controls.Add(table); 

     // Now iterate through the table and add your controls 
     for (i = 0; i < 1; i++) 
     { 
      row = new TableRow(); 
      row.BorderStyle = BorderStyle.Ridge; 

      for (j = 0; j <= tblCol; j++) 
      { 
       cell = new TableCell(); 
       cell.BorderWidth = 5; 
       cell.BorderStyle = BorderStyle.Ridge; 
       cell.BorderColor = System.Drawing.Color.Azure; 
       for (j = 0; j <= tblCol; j++) 
       { 
        string[] Header = { "CC NO.", "DATE", "TotalAmt", "NoOfRecpt", "Energy", "New", "Theft", "Misc", "SelectFile", "Upload", "Status" }; 
        Label lbl = new Label(); 
        lbl.ID = "lblHeader" + j; 
        if (j == 8) 
        { 
         lbl.Width = 220; 
        } 
        else if (j == 9) 
        { 
         lbl.Width = 50; 
        } 
        else 
        { 
         lbl.Width = 100; 
        } 
        lbl.Text = Header[j]; 

        // Add the control to the TableCell 
        cell.Controls.Add(lbl); 
       } 
       row.Cells.Add(cell); 
      } 

      // Add the TableRow to the Table 
      table.Rows.Add(row); 
     } 
     for (i = 0; i < tblRow; i++) 
     { 
      row = new TableRow(); 
      row.ID = tbRowId + i; 
      row.BorderStyle = BorderStyle.Ridge; 

      for (j = 0; j <= tblCol; j++) 
      { 
       cell = new TableCell(); 
       cell.ID = tbColId + i + j; 
       cell.BorderWidth = 5; 
       cell.BorderStyle = BorderStyle.Ridge; 
       cell.BorderColor = System.Drawing.Color.Azure; 
       for (j = 0; j <= 0; j++) 
       { 
        Label lbl = new Label(); 
        lbl.ID = "lblCCRow" + i + "Col" + j; 
        lbl.Text = "CC NO. " + i + " "; 
        lbl.Width = 100; 
        // Add the control to the TableCell 
        cell.Controls.Add(lbl); 
       } 
       for (j = 1; j <= 1; j++) 
       { 
        Label lbl = new Label(); 
        lbl.ID = "lblRow" + i + "Col" + j; 
        lbl.Width = 100; 
        lbl.Text = Convert.ToString(DateTime.Now.Day) + "/" + Convert.ToString(DateTime.Now.Month) + "/" + Convert.ToString(DateTime.Now.Year); 
        // Add the control to the TableCell 
        cell.Controls.Add(lbl); 
       } 
       for (j = 2; j <= 7; j++) 
       { 
        tb = new TextBox(); 
        tb.Width = 100; 
        tb.ID = "txtBoxRow" + i + "Col" + j; 

        tb.Text = ""; 
        // Add the control to the TableCell 
        cell.Controls.Add(tb); 
       } 
       for (j = 8; j <= 8; j++) 
       { 
        fileUp = new FileUpload(); 
        //m = i; n = j; 
        fileUp.ID = filename + i + j; 
        fileUp.Width = 220; 
        cell.Controls.Add(fileUp); 
        cmdArg = fileUp.ID; 

        UpLdButton = new Button(); 
        UpLdButton.Width = 100; 
        UpLdButton.Text = "Upload" + i + "Col" + j; 
        UpLdButton.ID = UpLdButton.Text; 
        UpLdButton.CommandArgument = cmdArg; 
        cell.Controls.Add(UpLdButton); 

        UpLdButton.Click += new EventHandler(UpLdButton_Click); 
       } 
       for (j = 9; j <= 9; j++) 
       { 
        Label lbl = new Label(); 
        lbl.ID = "lblRow" + i + "Col" + j; 
        lbl.Text = "[ Status ]"; 
        lbl.Width = 100; 
        // Add the control to the TableCell 
        cell.Controls.Add(lbl); 
       } 
       row.Cells.Add(cell); 
      } 

      // Add the TableRow to the Table 
      table.Rows.Add(row); 
     } //outer for-loop end 

     for (i = 0; i < 1; i++) 
     { 
      rrow = new TableRow(); 
      rrow.ID = "ResultRow"; 
      rrow.BorderStyle = BorderStyle.Ridge; 

      for (j = 0; j <= tblCol; j++) 
      { 
       rcell = new TableCell(); 
       rcell.ID = "resultCol" + j; 
       rcell.BorderWidth = 5; 
       rcell.BorderStyle = BorderStyle.Ridge; 
       rcell.BorderColor = System.Drawing.Color.Azure; 
       for (j = 0; j <= 0; j++) 
       { 
        Label lbl = new Label(); 
        //lbl.ID = "lblCCRow" + i + "Col" + j; 
        lbl.Text = "<b>Total</b>"; 
        lbl.Width = 100; 
        // Add the control to the TableCell 
        rcell.Controls.Add(lbl); 
       } 
       for (j = 1; j <= 1; j++) 
       { 
        Label lbl = new Label(); 
        //lbl.ID = "lblRow" + i + "Col" + j; 
        lbl.Width = 100; 
        lbl.Text = Convert.ToString(DateTime.Now.Day) + "/" + Convert.ToString(DateTime.Now.Month) + "/" + Convert.ToString(DateTime.Now.Year); 
        // Add the control to the TableCell 
        rcell.Controls.Add(lbl); 
       } 
       for (j = 2; j <= 7; j++) 
       { 
        tbr = new TextBox(); 
        tbr.Width = 100; 
        tbr.ID = "txtResult" + j; 

        tbr.Text = tbr.ID; 
        // Add the control to the TableCell 
        rcell.Controls.Add(tbr); 
       } 
       for (j = 8; j <= 8; j++) 
       { 
        Button btnCal = new Button(); 
        btnCal.Width = 100; 
        btnCal.Text = "Calculate"; 
        btnCal.ID = btnCal.Text; 
        txtArgs = tb.ID; 
        btnCal.CommandArgument = txtArgs; 
        Label1.Text = txtArgs; 
        rcell.Controls.Add(btnCal); 
        btnCal.Click += new EventHandler(btnCal_Click); 
       } 

       rrow.Cells.Add(rcell); 
      } 

      // Add the TableRow to the Table 
      table.Rows.Add(rrow); 
     } 

     //flag seetting 
     CTflag = true; 
     ViewState["dynamictable"] = true; 
    } 
} 
void btnCal_Click(object sender, EventArgs e) 
{ 
    //Calculation part goes here   
} 
protected override void LoadViewState(object earlierState) 
{ 
    base.LoadViewState(earlierState); 
    if (ViewState["dynamictable"] == null) 
     CreateDynamicTable(); 
} 

void UpLdButton_Click(object sender, EventArgs e) 
{ 
    Button btnUpLD = sender as Button; 
    btnUpLD = (Button)this.FindControl(Form.ID).FindControl(table.ID).FindControl(row.ID).FindControl(cell.ID).FindControl(UpLdButton.ID); 
    //btnUpLD.Text = Convert.ToString((Button)this.FindControl(Form.ID).FindControl(table.ID).FindControl(row.ID).FindControl(cell.ID).FindControl(UpLdButton.ID)); 
    //FileUpload fileupld = new FileUpload(); 
    fileUp = (FileUpload)this.FindControl(Form.ID).FindControl(table.ID).FindControl(row.ID).FindControl(cell.ID).FindControl(fileUp.ID); 
    string args = ((Button)sender).CommandArgument; 
    lblTest.Text = args; 
} 

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e) 
{ 
    //CreateDynamicTable(); 
    Label1.Text = "Index Changed!!!"; 
} 

}

下面的代码是我已经尝试过... bt这是错误的。

而阅读的textBox ID公司的M只得到只有最后的textBox ID，我unale到

迭代槽的textBox标识的

void btnCal_Click(object sender, EventArgs e) 
{ 
    Button btnCalculate = sender as Button; 
    TextBox txtFields; // Resultant txtField   
    string[,] txtNames = new string[tblRow,6]; 

    double TotAmt = new double(); 
    double NoOfRect = new double(); 
    double Energy = new double(); 
    double New1 = new double(); 
    double Theft = new double(); 
    double Misc = new double(); 

    TotAmt = 0; NoOfRect = 0; Energy = 0; New1 = 0; Theft = 0; Misc = 0; 



    for (int i = 0; i < tblRow; i++) 
    { 
     for (int j = 2; j <= 7; j++) 
     { 
      txtRes = new TextBox(); 
      //txtFields = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(row.ID).FindControl(cell.ID).FindControl(tb.ID); 
      //txtFields.Text = txtFields.ID; 
      //txtNames[i,j] = txtFields.Text; 
      if (j == 2) 
      { 
       txtFields = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(row.ID).FindControl(cell.ID).FindControl(tb.ID); 
       txtNames[i, j] = txtFields.Text; 
       TotAmt+= Convert.ToDouble(txtNames[i, j]); 
       txtRes = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(rrow.ID).FindControl(rcell.ID).FindControl(tbr.ID); 
       txtRes.Text = Convert.ToString(TotAmt); 
      } 
      else if (j == 3) 
      { 
       txtFields = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(row.ID).FindControl(cell.ID).FindControl(tb.ID); 
       txtNames[i, j] = txtFields.Text; 
       NoOfRect+= Convert.ToDouble(txtNames[i, j]); 
       txtRes = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(rrow.ID).FindControl(rcell.ID).FindControl(tbr.ID); 
       txtRes.Text = Convert.ToString(NoOfRect); 
      } 
      else if (j == 4) 
      { 
       txtFields = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(row.ID).FindControl(cell.ID).FindControl(tb.ID); 
       txtNames[i, j] = txtFields.Text; 
       Energy += Convert.ToDouble(txtNames[i, j]); 
       txtRes = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(rrow.ID).FindControl(rcell.ID).FindControl(tbr.ID); 
       txtRes.Text = Convert.ToString(Energy); 
      } 
      else if (j == 5) 
      { 
       txtFields = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(row.ID).FindControl(cell.ID).FindControl(tb.ID); 
       txtNames[i, j] = txtFields.Text; 
       New1 += Convert.ToDouble(txtNames[i, j]); 
       txtRes = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(rrow.ID).FindControl(rcell.ID).FindControl(tbr.ID); 
       txtRes.Text = Convert.ToString(New1); 
      } 
      else if (j == 6) 
      { 
       txtFields = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(row.ID).FindControl(cell.ID).FindControl(tb.ID); 
       txtNames[i, j] = txtFields.Text; 
       Theft += Convert.ToDouble(txtNames[i, j]); 
       txtRes = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(rrow.ID).FindControl(rcell.ID).FindControl(tbr.ID); 
       txtRes.Text = Convert.ToString(Theft); 
      } 
      else if (j == 7) 
      { 
       txtFields = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(row.ID).FindControl(cell.ID).FindControl(tb.ID); 
       txtNames[i, j] = txtFields.Text; 
       Misc += Convert.ToDouble(txtNames[i, j]); 
       txtRes = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(rrow.ID).FindControl(rcell.ID).FindControl(tbr.ID); 
       txtRes.Text = Convert.ToString(Misc); 
      } 
      else 
      { 
       Label1.Text = Convert.ToString("Value of J : " +j); 
      } 
      //txtRes = (TextBox)this.FindControl(Form.ID).FindControl(table.ID).FindControl(rrow.ID).FindControl(rcell.ID).FindControl(tbr.ID); 
      //txtRes.Text = Convert.ToString(results[i, j]); 
     } 
    } 

PLZ建议我正确的方式去做。

Answer 1

这可能是一个有用的功能。 Function source

public static Control FindControlRecursive(Control root, string id) 
    { 
     if (root.ID == id) 
     { 
      return root; 
     } 

     foreach (Control c in root.Controls) 
     { 
      Control t = FindControlRecursive(c, id); 
      if (t != null) 
      { 
       return t; 
      } 
     } 

     return null; 
    } 

然后只是这样的文本框循环。

for (int i = 0; i < tblRow; i++) 
     { 
      for (int j = 2; j <= 7; j++) 
      { 
       TextBox tb = FindControlRecursive(this, string.Format("txtBoxRow{0}Col{1}", i, j)); 
       switch(j) 
       { 
        case 2: 
         TotAmt += Convert.ToDouble(tb.Text); 
         break; 
        case 3: 
         break; 
        default: 
         Label1.Text = Convert.ToString("Value of J : " + j); 
       } 
      } 
     }