如何在 C# 中将数据表绑定到 DataGridView
本文关键字:数据表 绑定 DataGridView | 更新日期: 2023-09-27 18:33:23
我需要将我的 DataTable 绑定到我的 DataGridView。我这样做:
DTable = new DataTable();
SBind = new BindingSource();
//ServersTable - DataGridView
for (int i = 0; i < ServersTable.ColumnCount; ++i)
{
DTable.Columns.Add(new DataColumn(ServersTable.Columns[i].Name));
}
for (int i = 0; i < Apps.Count; ++i)
{
DataRow r = DTable.NewRow();
r.BeginEdit();
foreach (DataColumn c in DTable.Columns)
{
r[c.ColumnName] = //writing values
}
r.EndEdit();
DTable.Rows.Add(r);
}
SBind.DataSource = DTable;
ServersTable.DataSource = SBind;
但我得到的只是DataTable向我的DataGridView添加新列。我不需要这个,我只需要在现有列下写。
试试这个:
ServersTable.Columns.Clear();
ServersTable.DataSource = SBind;
如果不想清除所有现有列,则必须为每个现有列设置DataPropertyName
,如下所示:
for (int i = 0; i < ServersTable.ColumnCount; ++i) {
DTable.Columns.Add(new DataColumn(ServersTable.Columns[i].Name));
ServersTable.Columns[i].DataPropertyName = ServersTable.Columns[i].Name;
}
甚至更好:
DataTable DTable = new DataTable();
BindingSource SBind = new BindingSource();
SBind.DataSource = DTable;
DataGridView ServersTable = new DataGridView();
ServersTable.AutoGenerateColumns = false;
ServersTable.DataSource = DTable;
ServersTable.DataSource = SBind;
ServersTable.Refresh();
您告诉可绑定源它已绑定到 DataTable,反过来您需要告诉您的 DataGridView 不要自动生成列,因此它只会为您手动输入到控件中的列拉入数据...最后刷新控件以更新数据绑定。
在 DataGridView 上,将列的 DataPropertyName 设置为数据表的列名称。
//我首先构建了我的数据表,并填充了它,列,行和所有。然后,一旦数据表正常工作,请执行以下操作以将其绑定到 DGV。 注意:对于此示例,DGV 的 AutoGenerateColumns 属性必须为"true",否则将列名从数据表"分配"到 dgv 将不起作用。我之前也"添加"了我的数据集,但我认为这不是必需的。
BindingSource SBind = new BindingSource();
SBind.DataSource = dtSourceData;
ADGView1.AutoGenerateColumns = true; //must be "true" here
ADGView1.Columns.Clear();
ADGView1.DataSource = SBind;
//set DGV's column names and headings from the Datatable properties
for (int i = 0; i < ADGView1.Columns.Count; i++)
{
ADGView1.Columns[i].DataPropertyName = dtSourceData.Columns[i].ColumnName;
ADGView1.Columns[i].HeaderText = dtSourceData.Columns[i].Caption;
}
ADGView1.Enabled = true;
ADGView1.Refresh();
foreach (DictionaryEntry entry in Hashtable)
{
datagridviewTZ.Rows.Add(entry.Key.ToString(), entry.Value.ToString());
}
private void Form1_Load(object sender, EventArgs e)
{
DataTable StudentDataTable = new DataTable("Student");
//perform this on the Load Event of the form
private void AddColumns()
{
StudentDataTable.Columns.Add("First_Int_Column", typeof(int));
StudentDataTable.Columns.Add("Second_String_Column", typeof(String));
this.dataGridViewDisplay.DataSource = StudentDataTable;
}
}
//Save_Button_Event to save the form field to the table which is then bind to the TableGridView
private void SaveForm()
{
StudentDataTable.Rows.Add(new object[] { textBoxFirst.Text, textBoxSecond.Text});
dataGridViewDisplay.DataSource = StudentDataTable;
}
例如,
我们希望通过以下 2 个步骤将 DataTable 'Users' 设置为 DataGridView:步骤 1 - 通过以下方式获取所有用户:
public DataTable getAllUsers()
{
OracleConnection Connection = new OracleConnection(stringConnection);
Connection.ConnectionString = stringConnection;
Connection.Open();
DataSet dataSet = new DataSet();
OracleCommand cmd = new OracleCommand("semect * from Users");
cmd.CommandType = CommandType.Text;
cmd.Connection = Connection;
using (OracleDataAdapter dataAdapter = new OracleDataAdapter())
{
dataAdapter.SelectCommand = cmd;
dataAdapter.Fill(dataSet);
}
return dataSet.Tables[0];
}
步骤2-将返回结果设置为数据网格视图:
public void setTableToDgv(DataGridView DGV, DataTable table)
{
DGV.DataSource = table;
}
使用示例:
setTableToDgv(dgv_client,getAllUsers());