C# 如何获取GridView的DataSource中的记录数
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How to get the count of records in the DataSource of the GridView
提问by Adham
I have a grid viewalready binded with model, Now I want to get the count of the rows in this GridView's Datatable? not on the page count.
我grid view已经绑定了模型，现在我想获取其中的行数GridView's Datatable？不在页数上。
采纳答案by Habib
You can convert the GridView's DataSource to DataTable or DataView and then count the rows.
您可以将 GridView 的 DataSource 转换为 DataTable 或 DataView，然后计算行数。
DataTable dt = (DataTable) gridView.DataSource;
int count = dt.Rows.Count;
But this will be available only at the time of binding, not across the postback.
但这仅在绑定时可用，而不是在回发时可用。
To get the row count on post back, you can store the DataTableor its row count in session before binding it to the GridView.
要在回发时获取行数，您可以在将DataTable其绑定到 GridView 之前将其或它的行数存储在会话中。
DataTable dt = GetDataSourceTable();
Session["RowsCount"] = dt.Rows.Count;
Session["DataTable"] = dt; //Should be avoided since session are per user.
gridView.DataSource = dt;
gridView.DataBind();
Later you can access the Countfrom the session.
稍后您可以Count从会话中访问。
回答by ????
You can cast datasource in collection and then count as follow
您可以在集合中转换数据源，然后按如下方式计算
var count = ((ICollection<T>)GridView.DataSource).Count;
Or if you have datatable as source then
或者如果你有数据表作为源然后
DataTable dt = gridView.DataSource as DataTable;
int count = dt.Rows.Count;
回答by Aaron Blenkush
Have you tried something like the following?
您是否尝试过类似以下的操作？
yourDataTable.Rows.Count();
回答by nirbhay
You can try this:
你可以试试这个：
textBox1.Text = gridView1.RowCount.ToString();
回答by mahdi roodbari
you can use this code:
您可以使用此代码：
DataView MyDV = (DataView)SqldatasourceName.Select(DataSourceSelectArguments.Empty);
MyDV.RowFilter = SqldatasourceName.FilterExpression;
int RecordCount = MyDV.Count;
