Question

我有一个与ObjectDataSource绑定的GridView。我有一个返回DataTable的方法。如何将DataTable提供给ObjectDataSource，以便在代码中更新GridView？

示例：

protected void Page_Load(object sender, EventArgs e) 
{
    MyClass obj = new MyClass(textbox.Text);
    DataTable dt = obj.GetData();

    ObjectDataSource1.DataSource = dt; 
}

是的，我知道ODS没有DataSource属性。这就是为什么我被卡住了。

如果您正在考虑，为什么不直接将GridView分配给DataTable;答案是：我们喜欢ODS + GridView组合提供的自动排序功能。

Google上的所有搜索都返回了如何从ODS获取DT。我找不到关于如何将DT引入ODS的单一参考。看起来这是一个非常普遍的需求，因为来自ASP.NET 1.1的人将拥有大量生成DT的代码，如果他们想要更新UI，他们会希望将DT放入ODS。

Answer 1

这样的事情：

public YourDataTableName GetData()
{
 YourDataSet ds = new YourDataSet();

 //TODO:Load your data in the set

  return ds.YourDataTableName;
}

Answer 2

您可以围绕公共方法包装数据，然后在ObjectDataSource的构造函数中使用方法的签名。在绑定过程中，它将执行对指定方法的调用，您将获得数据。

查看此博文http://www.superedge.net/2010/04/how-to-populate-objectdatasource.html

/// <summary>

    /// Gets the data table for object source.

    /// </summary>

    /// <returns></returns>

    public DataSet GetDataTableForObjectSource()

    {

        // do whatever you want to do here and 

        // return the table with the data

        return MyDataSet.MyTable;

    }





    /// <summary>

    /// Called by the ASP.NET page framework to notify server controls that use 

    /// composition-based implementation to create any child controls 

    /// they contain in preparation for posting back or rendering.

    /// </summary>

    protected override void CreateChildControls()

    {

        base.CreateChildControls();



        // in this constructor specify the type name, the class name and 

        // the public method inside this class where the object datasource will retrieve the data

        // make it a signed assembly for security reasons.

        var edgeDataSource =

            new ObjectDataSource(

                "MyNamespace.MyClass, MyNamespace.MyClasss, Version=1.0.0.0, Culture=neutral, PublicKeyToken=ce8ab85a8f42a5e8",

                "GetDataTableForObjectSource") {ID = "EdgeDataSource"};



        Grid = new SPGridView

                       {

                           AutoGenerateColumns = false,

                           AllowSorting = true,

                           AllowPaging = true,

                           AllowFiltering = true,

                           PageSize = 10

                       };



        // do not use DataSource property. MUST USE DataSourceID with the control name

        Grid.DataSourceID = "EdgeDataSource";



        // do this before the databind

        Controls.Add(edgeDataSource);

        Controls.Add(Grid);



        // bind the objects and execute the call 

        //specified in the ObjectDataSource constructor

        Grid.DataBind();

    }

我希望它有所帮助干杯，〜边缘

Answer 3

试试这个：

(objDtSrcUsers.Select() as DataView).Table.DataSet

如何将DataTable / DataSet转换为ObjectDataSource

3 个答案: