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。

如何在 C# 中将数据表绑定到 DataGridView

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());