Question

我是ASP.NET新手。我想根据API的响应动态地向GridView添加一列

id      User     secretcode
1       u1       {response from the API based on the Id value}
2       u1       {response from the API based on the Id value}
3       u1       {response from the API based on the Id value}
4       u1       {response from the API based on the Id value}
5       u1       {response from the API based on the Id value}

id和User已经在我的数据库表（用户）中，因此对于每个返回的行，我想调用API来填充我的第3列，即secretcode。基本上，我对使用ForEach循环的地方感到困惑。

这是我正在处理的粗略代码：

DataTable table = new DataTable();
DataColumn col3 = new DataColumn("Secretcode");
col3.DataType = System.Type.GetType("System.Int");
table.Columns.Add(col3);
row[col3] = {response data from API}
gvTest.DataSource = table;
gvTest.DataBind();

Answer 1

也许是这样的

DataTable table = new DataTable();
DataColumn col = new DataColumn("Secretcode");
table.Columns.Add(col);
for(int i = 0; i < table.Rows.Count; i++)
{
    // Where 'SomeAPICall()' is calling the API and returning the
    // correct data type. If it is returning an object you may want
    // to convert it before you attach it to the table

    table.Rows[i]["Secretcode"] = SomeAPICall(table.Rows[i]["id"]);
}
gvTest.DataSource = table;
gvTest.DataBind();

或者如果您按照foreach循环的想法出售：

DataTable table = new DataTable();
DataColumn col = new DataColumn("Secretcode");
table.Columns.Add(col);
foreach(DataRow row in table.Rows)
{
    // Where 'SomeAPICall()' is calling the API and returning the
    // correct data type. If it is returning an object you may want
    // to convert it before you attach it to the table

    row["Secretcode"] = SomeAPICall(row["id"]);
}
gvTest.DataSource = table;
gvTest.DataBind();

我更喜欢使用for循环，因为通常你想在2个不同的集合上使用相同的索引号，这对于foreach循环你真的可以做到。在这种情况下，虽然它不重要。

根据API响应填充GridView列数据

1 个答案: