預填充在FormView控件插入值默認爲

ERROR：「而在FormView‘FormView1’解僱事件ItemInserting這是沒有處理」

我有一個FormView在頁面第一次加載時設置爲插入模式。我也想在這些輸入文本框和下拉列表中預填充值。所以我可以通過使用後面的代碼並將值寫入這些框來實現它，但是當我單擊「插入」LinkButton時，它會給我那個錯誤。

這裏是我的FormView控件代碼：

 <asp:FormView ID="FormView1" DefaultMode="Insert" runat="server" 
      DateSourceID="dsApprovedCreateNew" 
      DataKeyNames="ApprovedID" 
     > 
      <InsertItemTemplate> 

      <table class="FormDetail" width="95%" height="100%" align="center" class="FormDetail" > 
      <tr> 
       <td class="right">MDF Name:</td> 
       <td> 
        <asp:TextBox ID="MDFName" runat="server" Width="50%" Text='<%# Bind("MDFName") %>' > </asp:TextBox> 
        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" 
        ControlToValidate="MDFName" Text="The MDFName field is required!" runat="server" /> 

       </td> 
      </tr> 
      <tr> 
       <td>Vendor Name</td> 
       <td> 
        <asp:DropDownList ID="ddlVendorList" runat="server"></asp:DropDownList> 

       </td> 
      </tr> 
      <tr> 
       <td>Vendor BU</td> 
       <td> 
        <asp:DropDownList ID="ddlVendorBUList" runat="server"></asp:DropDownList> 

       </td> 
      </tr> 
      <tr> 
       <td class="right">Vendor Quarter:</td> 
       <td> 
        <asp:DropDownList ID="VendorQuarter" runat="server" Text='<%# Bind("VendorQuarter") %>' 
        AppendDataBoundItems="true"> 
         <asp:ListItem Value="Q1">Q1</asp:ListItem> 
         <asp:ListItem Value="Q2">Q2</asp:ListItem> 
         <asp:ListItem Value="Q3">Q3</asp:ListItem> 
         <asp:ListItem Value="Q4">Q4</asp:ListItem> 
       </asp:DropDownList> 
       </td> 
      </tr> 

      <tr> 
       <td class="right">MDF Amount:</td> 
       <td> 
        <asp:TextBox ID="MDFAmount" runat="server" Width="20%" TextMode="SingleLine" Text='<%# Bind("VendorQuarter") %>'></asp:TextBox> 
        <asp:CustomValidator ID="RangeValidator3" runat="server" ControlToValidate="MDFAmount" 
        ErrorMessage="Enter numerical value only!" ClientValidationFunction="validateNumber"/> 
        <asp:RequiredFieldValidator ControlToValidate="MDFAmount" Text="The MDFAmount field is required!" runat="server" /> 
        <%-- 
        <asp:RegularExpressionValidator ID="RangeValidator4" runat="server" ControlToValidate="MDFAmount" 
        Display="Dynamic" ErrorMessage="*Enter numerical value only" 
        ValidationExpression="^\d*[0-9](|.\d*[0-9]|,\d*[0-9])?$"/> 
        --%> 
       </td> 
      </tr> 
      <tr> 
       <td class="right">Begin Date (mm/dd/yyyy):</td> 
       <td> 
        <asp:TextBox ID="BeginDate" runat="server" Width="50%" TextMode="SingleLine" DataFormatString="{0:MM/dd/yyyy}" 
         ApplyFormatInInsertMode="true" ></asp:TextBox> 
        <asp:RegularExpressionValidator ID="RangeValidator1" runat="server" ControlToValidate="BeginDate" ForeColor="Red" 
         ErrorMessage="Enter Valid Date in dd/mm/yyyy format." SetFocusOnError="True" Display="Dynamic" Type="Date" 
         ValidationExpression="^(0[1-9]|1[012])[-/.](0[1-9]|[12][0-9]|3[01])[-/.](19|20)\d\d$"> 
        </asp:RegularExpressionValidator> 


       </td> 
      </tr> 
      <tr> 
       <td class="right">End Date (mm/dd/yyyy):</td> 
       <td> 
        <asp:TextBox ID="EndDate" runat="server" Width="50%"></asp:TextBox> 
        <asp:RegularExpressionValidator ID="RangeValidator2" runat="server" ControlToValidate="EndDate" ForeColor="Red" 
           ErrorMessage="Enter Valid Date in dd/mm/yyyy format." SetFocusOnError="True" Display="Dynamic" Type="Date" 
           ValidationExpression="^(0[1-9]|1[012])[-/.](0[1-9]|[12][0-9]|3[01])[-/.](19|20)\d\d$"/> 
       </td> 
      </tr> 


      <tr> 
       <td class="right">MDF Summary:</td> 
       <td> 
        <asp:TextBox ID="MDFSummary" TextMode="MultiLine" Width="50%" Height="100" runat="server"></asp:TextBox> 
       </td> 
      </tr> 
         <tr> 
       <td class="right">Status:</td> 
       <td> 
        <asp:DropDownList ID="Status" runat="server" 
        AppendDataBoundItems="true"> 
         <asp:ListItem>Active</asp:ListItem> 
         <asp:ListItem>Inactive</asp:ListItem> 
       </asp:DropDownList> 
       </td> 
      </tr> 
      <tr> 
       <td colspan="2"> 
       <asp:linkbutton id="InsertButton" 
        text="Insert" 
        commandname="Insert" 
        runat="server" /> 
       <asp:linkbutton id="CancelButton" 
        text="Cancel" 
        commandname="Cancel" 
        runat="server" /> 
       </td> 
      </tr>   
     </table> 

    <asp:HiddenField ID="CreatedBy" runat="server" value="44444"/> 
    </InsertItemTemplate>  
    </asp:FormView>  

<asp:sqldatasource id="dsApprovedCreateNew" 
     connectionstring="<%$ ConnectionStrings:ConnectionString%>" 
     SelectCommand="SELECT p.* 
      , (SELECT VendorName FROM MDF_Vendor WHERE VendorID = p.VendorID) AS VendorName 
      , (SELECT VendorBUName FROM MDF_VendorBU WHERE VendorBUID = p.VendorBUID) AS VendorBUName 
      FROM dbo.MDF_Proposed p Where p.ProposedID = 63" 
     InsertCommand = "INSERT INTO [MDF_Approved] ([VendorID], [VendorBUID], [MDFName] 
      , [BeginDate], [EndDate], [CreatedBy]) 
      VALUES (@VendorID, @VendorBUID, @MDFName, @BeginDate, @EndDate, '1234') " 

     runat="server"> 
     <SelectParameters> 
      <asp:QueryStringParameter Name="ProposedID" QueryStringField="ProposedID" runat="server" /> 
     </SelectParameters> 
</asp:sqldatasource> 
</form>

後面的代碼（我是新手，所以不要在我的代碼笑，建議，歡迎）

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Configuration; 
using System.Data.SqlClient; 
using System.Data; 

public partial class _Default : System.Web.UI.Page 
{ 

    protected void Page_Load(object sender, EventArgs e) 
    { 

     //FormView1.PreRender += FormView1_PreRender; 
     //FormView1.DataBinding += FormView1_DataBinding; 
     if (!IsPostBack) 
     { 
      //Response.Write("ProposedID: " + Request.QueryString["ProposedID"]); 
      int ProposedID = FetchQueryStringIdentifierByKey("ProposedID"); 
      Response.Write("ProposedID : " + ProposedID); 
      //FormView1.DataSource = this.GetData(ProposedID); 
      //FormView1.DataBind(); 

      FillFormValues(ProposedID); 

      //GetData(ProposedID); 

     }  
    } 

    protected int FetchQueryStringIdentifierByKey(string key) 
    { 
     int identifier; 
     var isInt = int.TryParse(Request.QueryString[key], out identifier); 
     return (isInt) ? identifier : 0; 
    } 


    private DataSet GetData(int RecID) 
    { 
     string conString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; 
     string query = "SELECT * FROM MDF_Proposed WHERE ProposedID = 63"; 
     SqlCommand cmd = new SqlCommand(query); 
     SqlParameter[] param = new SqlParameter[1]; 


     param[0] = new SqlParameter("@RecID", SqlDbType.Int, 10); 
     param[0].Value = 1; // RecID; 
     for (int i = 0; i < param.Length; i++) 
     { 
      cmd.Parameters.Add(param[i]); 
     } 
     using (SqlConnection con = new SqlConnection(GetConnectionString())) 
     { 
      using (SqlDataAdapter sda = new SqlDataAdapter()) 
      { 
       cmd.Connection = con; 
       sda.SelectCommand = cmd; 
       using (DataSet ds = new DataSet()) 
       { 
        sda.Fill(ds); 
        return ds; 

       } 
      } 
     } 

    } 

    private void FillFormValues(int RecID) 
    { 
     string strConn = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; 
     SqlConnection con = new SqlConnection(strConn); 
     SqlCommand cmd = new SqlCommand(); 
     cmd.Connection = con; 
     cmd.CommandType = CommandType.Text; 
     cmd.CommandText = "SELECT * FROM MDF_Proposed WHERE ProposedID = 63"; 
     cmd.Parameters.AddWithValue("@RecID", RecID); 
     DataSet objDs = new DataSet(); 
     SqlDataAdapter dAdapter = new SqlDataAdapter(); 
     dAdapter.SelectCommand = cmd; 
     con.Open(); 
     dAdapter.Fill(objDs); 
     con.Close(); 
     if (objDs.Tables[0].Rows.Count > 0) 
     { 
      if (FormView1.CurrentMode == FormViewMode.Insert) 
      { 
       Response.Write("The Mode: " + FormView1.CurrentMode); 
       TextBox MDFName = (TextBox)FormView1.FindControl("MDFName"); 
       MDFName.Text = objDs.Tables[0].Rows[0]["MDFName"].ToString(); 

       TextBox MDFAmount = (TextBox)FormView1.FindControl("MDFAmount"); 
       MDFAmount.Text = objDs.Tables[0].Rows[0]["MDFAmount"].ToString(); 

       TextBox BeginDate = (TextBox)FormView1.FindControl("BeginDate"); 
       BeginDate.Text = FormatDateNoTime(objDs.Tables[0].Rows[0]["BeginDate"].ToString()); 

       TextBox EndDate = (TextBox)FormView1.FindControl("EndDate"); 
       EndDate.Text = FormatDateNoTime(objDs.Tables[0].Rows[0]["EndDate"].ToString()); 

       fillVendorDLL(Convert.ToInt32(objDs.Tables[0].Rows[0]["VendorID"])); 
       fillVendorBUDLL(Convert.ToInt32(objDs.Tables[0].Rows[0]["VendorID"]), Convert.ToInt32(objDs.Tables[0].Rows[0]["VendorBUID"])); 

       TextBox MDFSummary = (TextBox)FormView1.FindControl("MDFSummary"); 
       MDFSummary.Text = objDs.Tables[0].Rows[0]["MDFSummary"].ToString(); 
      } 
      else 
      { 
       Response.Write("Nothing"); 
      } 
     } 
     else 
     { 
      Response.Write("No Record found"); 
     } 
    } 


    protected void fillVendorDLL(int VendorID) 
    { 


     //DropDownList ddlVendor = (DropDownList)sender; 
     // DropDownList ddlVendor = (DropDownList)DetailsView1.FindControl("updateVendorName"); 

     //DropDownList ddlVendor = (DropDownList)sender; 

     //DropDownList ddlVendor = (DropDownList)DetailsView1.FindControl(ddlID); 


     DropDownList ddlVendor = 
      (DropDownList)FormView1.FindControl("ddlVendorList"); 


     if (ddlVendor != null) 
     { 
      //Response.Write("SelectChanged"); 
      //int VendorID = Convert.ToInt32(ddlVendor.SelectedValue.ToString()); 
      //Response.Write("VendorID: " + VendorID); 

      ddlVendor.Items.Clear(); 

      string strConn = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; 
      SqlConnection con = new SqlConnection(strConn); 
      SqlCommand cmd = new SqlCommand(); 
      cmd.Connection = con; 
      cmd.CommandType = CommandType.Text; 
      cmd.CommandText = "SELECT VendorID, VendorName FROM dbo.MDF_Vendor"; 
      cmd.Parameters.AddWithValue("@VendorID", VendorID); 
      DataSet objDs = new DataSet(); 
      SqlDataAdapter dAdapter = new SqlDataAdapter(); 
      dAdapter.SelectCommand = cmd; 
      con.Open(); 
      dAdapter.Fill(objDs); 

      con.Close(); 

      if (objDs.Tables[0].Rows.Count > 0) 
      { 
       foreach (DataRow dr in objDs.Tables[0].Rows) 
       { 
        ddlVendor.Items.Insert(0, new ListItem((dr["VendorName"]).ToString(), (dr["VendorID"]).ToString())); 
        ddlVendor.SelectedValue = Convert.ToString(VendorID); 
       } 
      } 
     } 
    } 


    protected void fillVendorBUDLL(int VendorID, int VendorBUID) 
    { 


     //DropDownList ddlVendor = (DropDownList)sender; 
     // DropDownList ddlVendor = (DropDownList)DetailsView1.FindControl("updateVendorName"); 

     //DropDownList ddlVendor = (DropDownList)sender; 

     //DropDownList ddlVendor = (DropDownList)DetailsView1.FindControl(ddlID); 


     DropDownList ddlVendorBU = 
      (DropDownList)FormView1.FindControl("ddlVendorBUList"); 


     if (ddlVendorBU != null) 
     { 
      //Response.Write("SelectChanged"); 
      //int VendorID = Convert.ToInt32(ddlVendor.SelectedValue.ToString()); 
      //Response.Write("VendorID: " + VendorID); 

      ddlVendorBU.Items.Clear(); 

      string strConn = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; 
      SqlConnection con = new SqlConnection(strConn); 
      SqlCommand cmd = new SqlCommand(); 
      cmd.Connection = con; 
      cmd.CommandType = CommandType.Text; 
      cmd.CommandText = "SELECT VendorBUID, VendorBUName FROM dbo.MDF_VendorBU WHERE VendorID = @VendorID"; 
      cmd.Parameters.AddWithValue("@VendorID", VendorID); 
      cmd.Parameters.AddWithValue("@VendorBUID", VendorBUID); 
      DataSet objDs = new DataSet(); 
      SqlDataAdapter dAdapter = new SqlDataAdapter(); 
      dAdapter.SelectCommand = cmd; 
      con.Open(); 
      dAdapter.Fill(objDs); 

      con.Close(); 

      if (objDs.Tables[0].Rows.Count > 0) 
      { 
       foreach (DataRow dr in objDs.Tables[0].Rows) 
       { 
        ddlVendorBU.Items.Insert(0, new ListItem((dr["VendorBUName"]).ToString(), (dr["VendorBUID"]).ToString())); 
        ddlVendorBU.SelectedValue = Convert.ToString(VendorBUID); 
       } 
      } 
     } 
    } 

    public string GetConnectionString(){ 
     //sets the connection string from your web config file "ConnString" is the name of your Connection String 
     return System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; 
    } 

    private void ExecuteInsert(string VendorName, string VendorBU, string MDFAmount 
    , string StartDate, string EndDate, string VendorQuarter, string MDFName, String MDFSummary, string Status, string CreatedBy) 
     { 
     SqlConnection conn = new SqlConnection(GetConnectionString()); 
     string sql = "INSERT INTO MDF_Proposed (VendorID, VendorBUID, MDFAmount, BeginDate, EndDate, VendorQuarter 
      , MDFName, MDFSummary, Status, CreatedBy) VALUES " 
      + " (@VendorID, @VendorBUID, @MDFAmount, @StartDate, @EndDate, @VendorQuarter, @MDFName, @MDFSummary, @Status, @CreatedBy)"; 

     try 
     { 

      conn.Open(); 
      SqlCommand cmd = new SqlCommand(sql, conn); 
      SqlParameter[] param = new SqlParameter[10]; 

      param[0] = new SqlParameter("@VendorID", SqlDbType.VarChar, 50); 
      param[1] = new SqlParameter("@VendorBUID", SqlDbType.VarChar, 50); 
      param[2] = new SqlParameter("@MDFAmount", SqlDbType.Decimal); 
       param[2].Precision = 19; 
       param[2].Scale = 4; 
      param[3] = new SqlParameter("@StartDate", SqlDbType.DateTime); 
      param[4] = new SqlParameter("@EndDate", SqlDbType.DateTime); 
      param[5] = new SqlParameter("@VendorQuarter", SqlDbType.VarChar, 50); 
      param[6] = new SqlParameter("@MDFName", SqlDbType.VarChar, 50); 
      param[7] = new SqlParameter("@MDFSummary", SqlDbType.VarChar, 2000); 
      param[8] = new SqlParameter("@Status", SqlDbType.VarChar, 50); 
      param[9] = new SqlParameter("@CreatedBy", SqlDbType.Int, 10); 

      param[0].Value = VendorName; 
      param[1].Value = VendorBU; 
      param[2].Value = MDFAmount; 
      param[3].Value = StartDate; 
      param[4].Value = EndDate; 
      param[5].Value = VendorQuarter; 
      param[6].Value = MDFName; 
      param[7].Value = MDFSummary; 
      param[8].Value = Status; 
      param[9].Value = CreatedBy; 

      for (int i = 0; i < param.Length; i++) 
      { 
       cmd.Parameters.Add(param[i]); 
      } 

      cmd.CommandType = CommandType.Text; 
      cmd.ExecuteNonQuery(); 
     } 
     catch (System.Data.SqlClient.SqlException ex) 
     { 
      string msg = "Insert Error:"; 
      msg += ex.Message; 
      throw new Exception(msg); 
     } 
     finally 
     { 
      conn.Close(); 
      //ClientScript.RegisterStartupScript(this.GetType(), "scriptid", window.parent.location.href='ViewVendors.aspx'", true); 
      Response.Write("<script>window.parent.location = 'ProposalListView.aspx';</script>"); 
      //Response.Redirect("ProposalListView.aspx"); 
      //Response.Write("<script>this.dialog('close');</script>"); 
     } 
    } 


    public static void ClearControls(Control Parent){ 

     if (Parent is TextBox) 
     { (Parent as TextBox).Text = string.Empty; } 
     else 
     { 
      foreach (Control c in Parent.Controls) 
       ClearControls(c); 
     } 
    } 

    public string FormatDateNoTime(string input) 
    { 
     string thedate; 
     DateTime strDate = DateTime.Parse(input); 
     thedate = strDate.ToString("MM/dd/yyyy"); 
     return thedate; 
    } 
}

來源

2012-10-18 Milacay

處理'FormView1.ItemInserting'事件。你真誠的上尉明顯。 –

我是新人，請儘可能詳細說明一些代碼。感謝您的幫助... – Milacay

我被卡住了。請幫助FormView1.ItemInserting事件？它看起來像我填充表單上的值時，它不綁定到窗體或東西？ – Milacay

您還可以使用DataBound事件：

protected void FormView1_DataBound(object sender, EventArgs e) 
    { 
     if (FormView1.CurrentMode == FormViewMode.Insert) 
     { 
      var textBox = (TextBox) FormView1.FindControl("MyTextBox"); 
      textBox.Text = "Default Value"; 
     } 
    }

來源

2013-09-09 17:40:55 Thomas77002

預填充在FormView控件插入值默認爲

回答

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