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POdataclassesdatacontext' does not contain a constructor that takes 0 arguments?
 

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  1. POdataclassesdatacontext' does not contain a constructor that takes 0 arguments?
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    <p>This is my DBML Designer Code</p> <pre><code> using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Data.Linq; using System.Data.Linq.Mapping; using System.Linq; using System.Linq.Expressions; using System.Reflection; public partial class DataClassesDataContext : System.Data.Linq.DataContext { private static System.Data.Linq.Mapping.MappingSource mappingSource = new AttributeMappingSource(); #region Extensibility Method Definitions partial void OnCreated(); #endregion public DataClassesDataContext(string connection) : base(connection, mappingSource) { OnCreated(); } public DataClassesDataContext(System.Data.IDbConnection connection) : base(connection, mappingSource) { OnCreated(); } public DataClassesDataContext(string connection, System.Data.Linq.Mapping.MappingSource mappingSource) : base(connection, mappingSource) { OnCreated(); } public DataClassesDataContext(System.Data.IDbConnection connection, System.Data.Linq.Mapping.MappingSource mappingSource) : base(connection, mappingSource) { OnCreated(); } } </code></pre> <p>this is my C# code</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Data.Linq; public partial class Login : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void cmdLogin_Click(object sender, EventArgs e) { DataClassesDataContext db = new DataClassesDataContext(); } } </code></pre> <p>when i write the DataClassesDataContex db=new DataClassesDataContex(); it will show DataClassesDataContex does not contain a constructor that takes 0 arguments?</p>
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    1. PO
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    1. This table or related slice is empty.
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    1. USGert Arnold
    1. USAshok Bhanwal
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. POdataclassesdatacontext' does not contain a constructor that takes 0 arguments?
      1. This table or related slice is empty.
      1. VTDownMod
    2. VO
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      1. POdataclassesdatacontext' does not contain a constructor that takes 0 arguments?
      1. This table or related slice is empty.
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    3. VO
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      1. POdataclassesdatacontext' does not contain a constructor that takes 0 arguments?
      1. This table or related slice is empty.
      1. VTUpMod
    1. COLook at the DataClassesDataContext - unless you have another file with a partial class with additional constructors, I don't see any parameterless constructors.
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      1. POdataclassesdatacontext' does not contain a constructor that takes 0 arguments?
      1. USTim
    2. COthen what should i do ?
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      1. POdataclassesdatacontext' does not contain a constructor that takes 0 arguments?
      1. USAshok Bhanwal
    3. COUmm....use one of the four constructors provided by the DataClassesDataContext?
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      1. POdataclassesdatacontext' does not contain a constructor that takes 0 arguments?
      1. USTim
 

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