Why DataColumn.Caption doesn't work?

问题

I am trying to create a DataTable and bind it to a DataGridView. It works, but I can't set columns headers via the Caption property. It displays headers using the ColumnName ("City") instead. MSDN says that

"You can use the Caption property to display a descriptive or friendly name for a DataColumn."

Here is my code:

DataColumn dc = new DataColumn("City", typeof(string));
dc.Caption = "Город"; 

DataTable dt = new DataTable();
dt.Columns.Add(dc); 

DataRow row = dt.NewRow(); 
row["City"] = "Moscow";
dt.Rows.Add(row);

datagridview.DataSource = dt;

回答1:

Well, MSDN is right. That is what the Caption property is for. However, that doesn't mean that control makers have to use the caption property. In this case, Microsoft didn't do that (although they really should have). You can modify your code to this though:

///snip

dataGridView1.DataSource = dt;

foreach (DataGridViewColumn col in dataGridView1.Columns) {
  col.HeaderText = dt.Columns[col.HeaderText].Caption;
}

回答2:

I think when you bind to a DataTable, the DataGridView does not use the Caption property. It only works when you bind to a DataSet.

You can modify the column headers manually like this:

dataGridView.Columns[i].HeaderText = dt.Columns[i].Caption;

回答3:

You should try this:

datagridView.Columns[0].HeaderText = "Title Goes Here.";

You may do this for the number of columns you have added. Only the index will change.

回答4:

in vb.net code :

Dim dt As New DataTable
dt.Columns.Add("col1").Caption = "Your Header Text"
'and add more columns with .caption
GridView1.DataSource = dt

For Each col As DataColumn In dt.Columns
    GridView1.Columns(col.ColumnName).HeaderText = col.Caption
Next

回答5:

@aquinas, this works for me

foreach (DataGridViewColumn col in dataGridView1.Columns) {
  col.HeaderText = dt.Columns[col.Name].Caption;
}

回答6:

            foreach (DataTable dataTable in dataSet.Tables)
        {
            form1.Controls.Add(new LiteralControl(String.Format("<h1>{0}</h1>", dataTable.TableName)));
            GridView grid = new GridView();
            grid.AllowPaging = false;
            grid.AutoGenerateColumns = false;

            foreach (DataColumn col in dataTable.Columns)
            {
                grid.Columns.Add(new BoundField { DataField = col.ColumnName, HeaderText = col.Caption });
            }

            grid.DataSource = dataTable;
            grid.DataBind();

            form1.Controls.Add(grid);
        }

来源：https://stackoverflow.com/questions/14267408/why-datacolumn-caption-doesnt-work

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