输入字符串格式不正确

Question

在我的gridview中，我有一个页脚模板，有一个插入链接按钮，TextBox和DropDownList.In gridview我有编辑，更新和删除选项以及页脚模板中的ddl I有来自其他表格的值，如城市，国籍，高中等。当我点击“插入”按钮时，我有这个错误：输入字符串的格式不正确。我想我必须从ddl转换值，因为在我的数据库中，我使用了查找向导。这里是我的cs代码：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.HtmlControls; 
using System.Web.UI.WebControls; 
using System.Text; 
using System.Data; 
using System.Data.OleDb; 

namespace Admitere1.Controale 
{ 
    public partial class WebUserControl1 : System.Web.UI.UserControl 
    { 

     protected void Page_Load(object sender, EventArgs e) 
     { 

     } 
     protected void lbInsert_Click(Object sender, EventArgs e) 
     { 

      TextBox txtNume = (TextBox)GridView3.FooterRow.FindControl("txtNume"); 
      TextBox txtPrenume = (TextBox)GridView3.FooterRow.FindControl("txtPrenume"); 
      TextBox txtPTata = (TextBox)GridView3.FooterRow.FindControl("txtPTata"); 
      DropDownList ddlSex = (DropDownList)GridView3.FooterRow.FindControl("ddlSex"); 
      DropDownList ddlLN = (DropDownList)GridView3.FooterRow.FindControl("ddlLN"); 
      DropDownList ddlLD = (DropDownList)GridView3.FooterRow.FindControl("ddlLD"); 
      DropDownList ddlNationalitate = (DropDownList)GridView3.FooterRow.FindControl("ddlNationalitate"); 
      TextBox txtCnp = (TextBox)GridView3.FooterRow.FindControl("txtCnp"); 
      TextBox txtSerie = (TextBox)GridView3.FooterRow.FindControl("txtSerie"); 
      TextBox txtNumar = (TextBox)GridView3.FooterRow.FindControl("txtNumar"); 
      TextBox txtTelefon = (TextBox)GridView3.FooterRow.FindControl("txtTelefon"); 
      TextBox txtEmail = (TextBox)GridView3.FooterRow.FindControl("txtEmail"); 
      DropDownList ddlLiceu = (DropDownList)GridView3.FooterRow.FindControl("ddlLiceu"); 
      DropDownList ddlSala = (DropDownList)GridView3.FooterRow.FindControl("ddlSala"); 
      DropDownList ddlAdmis = (DropDownList)GridView3.FooterRow.FindControl("ddlAdmis"); 
      DropDownList ddlUser = (DropDownList)GridView3.FooterRow.FindControl("ddlUser"); 



      SqlDataSource1.InsertParameters["Nume"].DefaultValue = ((TextBox)GridView3.FooterRow.FindControl("txtNume")).Text; 
      SqlDataSource1.InsertParameters["Prenume"].DefaultValue = ((TextBox)GridView3.FooterRow.FindControl("txtPrenume")).Text; 
      SqlDataSource1.InsertParameters["prenumeTata"].DefaultValue = ((TextBox)GridView3.FooterRow.FindControl("txtPTata")).Text; 
      SqlDataSource1.InsertParameters["Sex"].DefaultValue = ((DropDownList)GridView3.FooterRow.FindControl("ddlSex")).SelectedValue; 
      SqlDataSource1.InsertParameters["LocalitateNastere"].DefaultValue = ((DropDownList)GridView3.FooterRow.FindControl("ddlLN")).SelectedValue; 
      SqlDataSource1.InsertParameters["LocalitateDomiciliu"].DefaultValue = ((DropDownList)GridView3.FooterRow.FindControl("ddlLD")).SelectedValue; 
      SqlDataSource1.InsertParameters["Nationalitate"].DefaultValue = ((DropDownList)GridView3.FooterRow.FindControl("ddlNationalitate")).SelectedValue; ; 
      SqlDataSource1.InsertParameters["Cnp"].DefaultValue = ((TextBox)GridView3.FooterRow.FindControl("txtCnp")).Text; 
      SqlDataSource1.InsertParameters["SerieCI"].DefaultValue = ((TextBox)GridView3.FooterRow.FindControl("txtSerie")).Text; 
      SqlDataSource1.InsertParameters["NumarCI"].DefaultValue = ((TextBox)GridView3.FooterRow.FindControl("txtNumar")).Text; 
      SqlDataSource1.InsertParameters["Telefon"].DefaultValue = ((TextBox)GridView3.FooterRow.FindControl("txtTelefon")).Text; 
      SqlDataSource1.InsertParameters["Email"].DefaultValue = ((TextBox)GridView3.FooterRow.FindControl("txtEmail")).Text; 
     // SqlDataSource1.InsertParameters["A2aFacultate"].DefaultValue = ((CheckBox)GridView3.FooterRow.FindControl("ckFac")).Text; 
      SqlDataSource1.InsertParameters["Liceu"].DefaultValue = ((DropDownList)GridView3.FooterRow.FindControl("ddlLiceu")).SelectedValue; 
      // SqlDataSource1.InsertParameters["Inmatriculat"].DefaultValue = ((CheckBox)GridView3.FooterRow.FindControl("ckInmatriculat")).Text; 
      // SqlDataSource1.InsertParameters["Inmatriculat"].DefaultValue = ((CheckBox)GridView3.FooterRow.FindControl("ckInmatriculat")).Text; 
      SqlDataSource1.InsertParameters["Sala"].DefaultValue = ((DropDownList)GridView3.FooterRow.FindControl("ddlSala")).SelectedValue; 
      SqlDataSource1.InsertParameters["admisLa"].DefaultValue = ((DropDownList)GridView3.FooterRow.FindControl("ddlAdmis")).SelectedValue; 
      SqlDataSource1.InsertParameters["User"].DefaultValue = ((DropDownList)GridView3.FooterRow.FindControl("ddlUser")).SelectedValue; 

      SqlDataSource1.Insert(); 
      this.GridView3.ShowFooter = true; 
      this.GridView3.DataBind(); 
      Response.Redirect(Request.Url.AbsolutePath); 

     } 




     } 
} 

And a part of my ascx code: 

    <asp:GridView ID="GridView3" runat="server" AllowPaging="True" AutoGenerateColumns="False" DataKeyNames="idCandidat" DataSourceID="SqlDataSource1" ShowFooter="True"> 
     <Columns> 
      <asp:CommandField ShowDeleteButton="True" ShowEditButton="True" /> 
      <asp:TemplateField HeaderText="idCandidat" InsertVisible="False" SortExpression="idCandidat"> 
       <EditItemTemplate> 
        <asp:Label ID="Label1" runat="server" Text='<%# Eval("idCandidat") %>'></asp:Label> 
       </EditItemTemplate> 
       <ItemTemplate> 
        <asp:Label ID="Label1" runat="server" Text='<%# Bind("idCandidat") %>'></asp:Label> 
       </ItemTemplate> 
       <FooterTemplate> 
       <asp:LinkButton ValidationGroup="INSERT" OnClick="lbInsert_Click" ID="lbInsert" runat="server">Insert</asp:LinkButton> 
      </FooterTemplate> 
      </asp:TemplateField> 
      <asp:TemplateField HeaderText="nume" SortExpression="nume"> 
       <EditItemTemplate> 
        <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("nume") %>'></asp:TextBox> 
        <asp:RequiredFieldValidator ID="eqNume" runat="server" ErrorMessage="Introduceţi numele" 
        ControlToValidate="TextBox1" Text="*" ForeColor="Red"> 
       </asp:RequiredFieldValidator> 
       </EditItemTemplate> 
       <ItemTemplate> 
        <asp:Label ID="Label2" runat="server" Text='<%# Bind("nume") %>'></asp:Label> 
       </ItemTemplate> 
       <FooterTemplate> 
       <asp:TextBox ID="txtNume" runat="server" style="margin-top: 15px"></asp:TextBox> 
       <asp:RequiredFieldValidator ValidationGroup="INSERT" ID="eqInsertNume" runat="server" ErrorMessage="Introduceţi numele" 
        ControlToValidate="txtNume" Text="*" ForeColor="Red"> 
       </asp:RequiredFieldValidator> 
      </FooterTemplate> 
      </asp:TemplateField> 
............................................................................. 

    <asp:TemplateField HeaderText="user" SortExpression="user"> 
       <EditItemTemplate> 
        <asp:TextBox ID="TextBox16" runat="server" Text='<%# Bind("user") %>'></asp:TextBox> 
        <asp:RequiredFieldValidator ID="eqUser" runat="server" ErrorMessage="Introduceţi userul" 
        ControlToValidate="TextBox16" Text="*" ForeColor="Red"> 
       </asp:RequiredFieldValidator> 
       </EditItemTemplate> 
       <ItemTemplate> 
        <asp:Label ID="Label17" runat="server" Text='<%# Bind("user") %>'></asp:Label> 
       </ItemTemplate> 
       <FooterTemplate> 
        <asp:DropDownList ID="ddlUser" runat="server" DataSourceID="SqlDataSource8" DataTextField="email" DataValueField="email" Height="21px" Width="126px" style="margin-top:15px" > 
      <asp:ListItem>User</asp:ListItem> 
       </asp:DropDownList> 
       <asp:SqlDataSource ID="SqlDataSource8" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString9 %>" ProviderName="<%$ ConnectionStrings:ConnectionString9.ProviderName %>" SelectCommand="SELECT [email] FROM [USERI]"></asp:SqlDataSource> 
        <asp:RequiredFieldValidator ValidationGroup="INSERT" ID="eqInsertUser" runat="server" ErrorMessage="Introduceţi userul" 
        ControlToValidate="ddlUser" Text="*" ForeColor="Red"> 
       </asp:RequiredFieldValidator> 
       </FooterTemplate> 
      </asp:TemplateField> 
     </Columns> 
    <asp:ValidationSummary ValidationGroup="INSERT" ID="ValidationSummary1" ForeColor="Red" runat="server" /> 
    <p> 
    <asp:ValidationSummary ID="ValidationSummary2" ForeColor="Red" runat="server" /> 
     <p> 
     <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString9 %>" 
      DeleteCommand="DELETE FROM [CANDIDATI] WHERE [idCandidat] = ?" 
      InsertCommand="INSERT INTO [CANDIDATI] ([idCandidat], [nume], [prenume], [prenumeTata], [sex], [localitateNastere], [localitateDomiciliu], [nationalitate], [cnp], [serieCI], [numarCI], [telefon], [email], [a2aFacultate], [liceu], [înmatriculat], [sala], [admisLa], [user]) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)" ProviderName="<%$ ConnectionStrings:ConnectionString9.ProviderName %>" 
      SelectCommand="SELECT * FROM [CANDIDATI]" 
      UpdateCommand="UPDATE [CANDIDATI] SET [nume] = ?, [prenume] = ?, [prenumeTata] = ?, [sex] = ?, [localitateNastere] = ?, [localitateDomiciliu] = ?, [nationalitate] = ?, [cnp] = ?, [serieCI] = ?, [numarCI] = ?, [telefon] = ?, [email] = ?, [a2aFacultate] = ?, [liceu] = ?, [înmatriculat] = ?, [sala] = ?, [admisLa] = ?, [user] = ? WHERE [idCandidat] = ?"> 
      <DeleteParameters> 
       <asp:Parameter Name="idCandidat" Type="Int32" /> 
      </DeleteParameters> 
      <InsertParameters> 
       <asp:Parameter Name="idCandidat" Type="Int32" /> 
       <asp:Parameter Name="nume" Type="String" /> 
       <asp:Parameter Name="prenume" Type="String" /> 
       <asp:Parameter Name="prenumeTata" Type="String" /> 
       <asp:Parameter Name="sex" Type="String" /> 
       <asp:Parameter Name="localitateNastere" Type="Int32" /> 
       <asp:Parameter Name="localitateDomiciliu" Type="Int32" /> 
       <asp:Parameter Name="nationalitate" Type="Int32" /> 
       <asp:Parameter Name="cnp" Type="String" /> 
       <asp:Parameter Name="serieCI" Type="String" /> 
       <asp:Parameter Name="numarCI" Type="Int32" /> 
       <asp:Parameter Name="telefon" Type="String" /> 
       <asp:Parameter Name="email" Type="String" /> 
       <asp:Parameter Name="a2aFacultate" Type="Boolean" /> 
       <asp:Parameter Name="liceu" Type="Int32" /> 
       <asp:Parameter Name="înmatriculat" Type="Boolean" /> 
       <asp:Parameter Name="sala" Type="Int32" /> 
       <asp:Parameter Name="admisLa" Type="Int32" /> 
       <asp:Parameter Name="user" Type="Int32" /> 
      </InsertParameters> 

................................................................. 

而在源错误：SqlDataSource1.Insert（）; 堆栈跟踪：

[FormatException: Input string was not in a correct format.] System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) +10689507 System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) +145 System.String.System.IConvertible.ToInt32(IFormatProvider provider) +46 System.Convert.ChangeType(Object value, TypeCode typeCode, IFormatProvider provider) +297 System.Web.UI.WebControls.Parameter.GetValue(Object value, String defaultValue, TypeCode type, Boolean convertEmptyStringToNull, Boolean ignoreNullableTypeChanges) +126 System.Web.UI.WebControls.Parameter.GetValue(Object value, Boolean ignoreNullableTypeChanges) +63 System.Web.UI.WebControls.Parameter.get_ParameterValue() +40 System.Web.UI.WebControls.ParameterCollection.GetValues(HttpContext context, Control control) +247 System.Web.UI.WebControls.SqlDataSourceView.InitializeParameters(DbCommand command, ParameterCollection parameters, IDictionary exclusionList) +257 System.Web.UI.WebControls.SqlDataSourceView.ExecuteInsert(IDictionary values) +196 System.Web.UI.WebControls.SqlDataSource.Insert() +19 Admitere1.Controale.WebUserControl1.lbInsert_Click(Object sender, EventArgs e) in c:\Users\Iulia\Desktop\LICENTA\Admitere1\Admitere1\Controale\WebUserControl1.ascx.cs:63 System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) +116 System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +101 System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +9643314 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1724

Answer 1

我不能给你一个直接的解决方案，而无需知道GridView控件内的每个控件的值。该错误是由一个或多个插入参数Type="Int32"不具有作为其相应控件传递的值的整数引起的。一个例子是numarCI。尝试调试lblInsert_Click并检查每个应具有整数的控件的值。