这些方法AutoComplete.asmxWeb服务的错误,我发现了错误的Web服务
[WebMethod]
public List<string> GetCountries(string prefixText)
{
SqlConnection con = new SqlConnection(
ConfigurationManager.ConnectionStrings[
"MarinaNewConnectionString"].ToString());
con.Open();
SqlCommand cmd = new SqlCommand(
"select * from Marina where Country like @Name+'%'", con);
cmd.Parameters.AddWithValue("@Name", prefixText);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
List<string> CountryNames = new List<string>();
for(int i=0;i<dt.Rows.Count;i++)
{
CountryNames.Add(dt.Rows[i][5].ToString());
}
return CountryNames;
}
我发现错误
System.InvalidOperationException:有一个错误生成XML文档。 --->
System.InvalidCastException:无法转换类型的对象
编辑:
该表的SQL:
CREATE TABLE [dbo].[Marina](
[SNo] [int] IDENTITY(1,1) NOT NULL,
[WebSource] [varchar](500) NULL,
[MarinaName] [varchar](500) NULL,
[Region] [varchar](500) NULL,
[Address] [varchar](500) NULL,
[Country] [varchar](500) NULL,
[fax] [varchar](500) NULL,
[Phone] [varchar](500) NULL,
[Email] [varchar](500) NULL,
[Website] [varchar](500) NULL,
[latitude] [varchar](500) NULL,
[langitude] [varchar](500) NULL,
[NumberOfMoorings] [varchar](500) NULL,
[MGiD] [varchar](500) NULL,
[Association] [varchar](200) NULL,
)) ON [PRIMARY]
栈跟踪:
System.InvalidOperationException:生成时发生错误XML文档。 ---> System.InvalidCastException:无法投射类型为'System.Collections.Generic.List`1 [System.String]'的对象 以键入 'System.String []'。在 Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriter1.Write3_Arr ayOfString(对象 O)在 Microsoft.Xml.Serialization.GeneratedAssembly.ArrayOfStringSerializer1.Serialize(对象 objectToSerialize,XmlSerializationWriter作家)
你可以发布堆栈跟踪吗? – Rajesh 2012-02-02 10:53:44
这是我的表 CREATE TABLE [DBO]。[滨海]( \t [斯诺] [INT] IDENTITY(1,1)NOT NULL, \t [WebSource] [VARCHAR(500)NULL, \t [MarinaName ] [VARCHAR](500)NULL, \t [地区] [VARCHAR](500)NULL, \t [地址] [VARCHAR](500)NULL, \t [国家] [VARCHAR](500)NULL, \t [500] NULL, \t [Website] [var](500)NULL, \t [Phone] [varchar](500)NULL, \t [Email] [varchar]字符](500)NULL, \t [纬度] [VARCHAR](500)NULL, \t [langitude] [VARCHAR](500)NULL, \t [NumberOfMoorings] [VARCHAR](500)NULL, \t [MGID ] [varchar](500)NULL, \t [Association] [varchar](200)NULL, ) )ON [PRIMARY] – 2012-02-02 10:56:22
System.InvalidOperationException:生成XML文档时发生错误。 ---> System.InvalidCastException:无法强制转换'System.Collections.Generic.List'1 [System.String]'类型的对象以键入'System.String []'。 at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriter1.Write3_ArrayOfString(Object o) at Microsoft.Xml.Serialization.GeneratedAssembly.ArrayOfStringSerializer1.Serialize(Object objectToSerialize,XmlSerializationWriter writer) – 2012-02-02 10:58:48