datagridview中的组合框
问题描述：
我想在我的datagridview中放置一个组合框。我尝试了不同的方法（创建var列表<>，创建一个数组列表等等），而且没有任何工作。事情是我的列已经存在，因为我的选择查询显示我的数据库在datagridview。但是列是空的，因为在我的数据库中列填充了NULL值。datagridview中的组合框
我有两个选择：创建一个组合框并做一个添加列，或者如果您知道如何操作，请将我的组合框链接到已存在的列。显然，我需要帮助创建我的组合框。
谢谢！
我的代码：有其他的解决方案
public partial class Repair : Form
{
public Repair()
{
Main pp = new Main();
InitializeComponent();
this.label4.Text = pp.label3.Text;
SqlConnection maConnexion = new SqlConnection("Server= localhost; Database= Seica_Takaya;Integrated Security = SSPI; ");
maConnexion.Open();
SqlCommand command = maConnexion.CreateCommand();
SqlCommand command1 = maConnexion.CreateCommand();
if (Program.UserType == "admin")
{
command.CommandText = "SELECT Message, FComponent, ReadValue, ValueReference, RepairingTime FROM FailAndPass WHERE FComponent IS NOT NULL";
command1.CommandText = "SELECT Machine, BoardName, BoardNumber FROM FailAndPass WHERE FComponent IS NOT NULL";
}
else
{
command.CommandText = "SELECT Message, FComponent, ReadValue, ValueReference, RepairingTime FROM FailAndPass WHERE ReportingOperator IS NULL AND FComponent IS NOT NULL";
command1.CommandText = "SELECT Machine, BoardName, BoardNumber FROM FailAndPass WHERE ReportingOperator IS NULL AND FComponent IS NOT NULL";
}
SqlDataAdapter sda = new SqlDataAdapter(command);
SqlDataAdapter sda1 = new SqlDataAdapter(command1);
DataTable dt = new DataTable();
DataTable dt1 = new DataTable();
sda.Fill(dt);
sda1.Fill(dt1);
DataColumn dcIsDirty = new DataColumn("IsDirty", typeof(bool));
DataColumn dcIsDirty1 = new DataColumn("IsDirty", typeof(bool));
dcIsDirty.DefaultValue = false;
dcIsDirty1.DefaultValue = false;
dataGridView1.DataSource = dt;
dataGridView2.DataSource = dt1;
DataGridViewComboBoxColumn combo = new DataGridViewComboBoxColumn();
combo.HeaderText = "FaultCodeByOp";
combo.Name = "combo";
ArrayList list = new ArrayList();
list.Add("C-C");
list.Add("C-O");
combo.Items.AddRange(list.ToArray());
dataGridView1.Columns.Add(combo);
dt.Columns.Add(dcIsDirty);
dt1.Columns.Add(dcIsDirty1);
maConnexion.Close();
dataGridView1.Columns[6].Visible = false;
dataGridView2.Columns[3].Visible = false;
foreach (DataGridViewRow row in dataGridView1.Rows)
{
for(int i=0;i<4;i++)
{
dataGridView1.Columns[i].ReadOnly = true;
}
}
foreach (DataGridViewRow row in dataGridView2.Rows)
{
for(int i=0;i<3;i++)
{
dataGridView2.Columns[i].ReadOnly = true;
}
}
}
private void button2_Click(object sender, EventArgs e)
{
this.Hide();
Main ff = new Main();
ff.Show();
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
SqlConnection maConnexion = new SqlConnection("Server= localhost; Database= Seica_Takaya;Integrated Security = SSPI; ");
maConnexion.Open();
string Var1 = textBox1.Text;
SqlCommand command = maConnexion.CreateCommand();
SqlCommand command1 = maConnexion.CreateCommand();
if (Program.UserType == "admin")
{
if (textBox1.Text != String.Empty)
{
//command.Parameters.AddWithValue("@BoardName", Var1 + "%");
//command.Parameters.AddWithValue("@Machine", Var1 + "%");
command.Parameters.AddWithValue("@SerialNum", Var1 + "%");
command1.Parameters.AddWithValue("@SerialNum", Var1 + "%");
//command.Parameters.AddWithValue("@FComponent", Var1 + "%");
//command.CommandText = "SELECT * FROM FailAndPass WHERE BoardName LIKE @BoardName OR Machine LIKE @Machine OR SerialNum LIKE @SerialNum OR FComponent LIKE @FComponent";
command.CommandText = "SELECT Message, FComponent, ReadValue, ValueReference, FaultCodeByOp, RepairingTime FROM FailAndPass WHERE SerialNum LIKE @SerialNum AND FComponent IS NOT NULL";
command1.CommandText = "SELECT Machine, BoardName, BoardNumber FROM FailAndPass WHERE SerialNum LIKE @SerialNum And FComponent IS NOT NULL";
}
}
else
{
if (textBox1.Text != String.Empty)
{
//command.Parameters.AddWithValue("@BoardName", Var1 + "%");
//command.Parameters.AddWithValue("@Machine", Var1 + "%");
command.Parameters.AddWithValue("@SerialNum", Var1 + "%");
command1.Parameters.AddWithValue("@SerialNum", Var1 + "%");
//command.Parameters.AddWithValue("@FComponent", Var1 + "%");
//command.CommandText = "SELECT * FROM FailOnly WHERE (BoardName LIKE @BoardName OR Machine LIKE @Machine OR SerialNum LIKE @SerialNum OR FComponent LIKE @FComponent) AND ReportingOperator IS NULL ";
command.CommandText = "SELECT Message, FComponent, ReadValue, ValueReference, FaultCodeByOp, RepairingTime FROM FailAndPass WHERE (SerialNum LIKE @SerialNum) AND ReportingOperator IS NULL AND FComponent IS NOT NULL ";
command1.CommandText = "SELECT DISTINCT Machine, BoardName, BoardNumber FROM FailAndPass WHERE (SerialNum LIKE @SerialNum) AND ReportingOperator IS NULL AND FComponent IS NOT NULL";
}
}
if (!string.IsNullOrWhiteSpace(textBox1.Text))
{
SqlDataAdapter sda = new SqlDataAdapter(command);
SqlDataAdapter sda1 = new SqlDataAdapter(command1);
DataTable dt = new DataTable();
DataTable dt1 = new DataTable();
sda.Fill(dt);
sda1.Fill(dt1);
DataColumn dcIsDirty = new DataColumn("IsDirty", typeof(bool));
DataColumn dcIsDirty1 = new DataColumn("IsDirty", typeof(bool));
dcIsDirty.DefaultValue = false;
dcIsDirty1.DefaultValue = false;
dt.Columns.Add(dcIsDirty);
dt1.Columns.Add(dcIsDirty1);
dataGridView1.DataSource = dt;
dataGridView2.DataSource = dt1;
maConnexion.Close();
dataGridView1.Columns[6].Visible = false;
dataGridView2.Columns[3].Visible = false;
}
}
private void button1_Click(object sender, EventArgs e)
{
SqlConnection maConnexion = new SqlConnection("Server= localhost; Database= Seica_Takaya;Integrated Security = SSPI; ");
maConnexion.Open();
foreach (DataGridViewRow row in dataGridView1.Rows)
{
if ((row.Cells[6].Value != null) && (bool)row.Cells[6].Value)
{
SqlCommand command = maConnexion.CreateCommand();
command = new SqlCommand("update FailAndPass set [email protected], [email protected], RepairingTime = @RT, [email protected] WHERE [email protected]", maConnexion);
command.Parameters.AddWithValue("@Fault", row.Cells[4].Value != null ? row.Cells[4].Value : DBNull.Value);
command.Parameters.AddWithValue("@RD", DateTime.Today.ToString("d"));
command.Parameters.AddWithValue("@RT", row.Cells[5].Value != null ? row.Cells[5].Value : DBNull.Value);
command.Parameters.AddWithValue("@RO", this.label4.Text);
command.Parameters.AddWithValue("@Serial", this.textBox1.Text);
command.ExecuteNonQuery();
}
}
maConnexion.Close();
this.Hide();
Repair rep = new Repair();
rep.Show();
}
private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
if (dataGridView1.IsCurrentRowDirty)
{
dataGridView1.Rows[e.RowIndex].Cells[6].Value = true;
}
}
}
答
private void ComboboxInDatagridview()
{
var dataGridView1 = new DataGridView();
DataGridViewComboBoxColumn combo = new DataGridViewComboBoxColumn();
combo.HeaderText = "FaultCodeByOp";
combo.Name = "combo";
dataGridView1.Columns.AddRange(new DataGridViewColumn[] { combo });
ArrayList list = new ArrayList() { "C-C", "C-O" };
var rowindex = dataGridView1.Rows.Add();
DataGridViewComboBoxCell cmbCell = (DataGridViewComboBoxCell)dataGridView1["combo", rowindex];
//Or
//var columnindex = 0;
//DataGridViewComboBoxCell cmbCell = (DataGridViewComboBoxCell)dataGridView1[columnindex, rowindex];
cmbCell.DataSource = list;
}
答
有人吗？我试过别的东西：
DataGridViewComboBoxColumn combo = new DataGridViewComboBoxColumn();
ArrayList list1 = new ArrayList(); //{ "C-C", "C-O", "Absence composant", "Mauvaise valeur", "Mauvais sens", "Mauvais composant" };
list1.Add("C-C");
list1.Add("C-O");
combo.DataSource = list1;
combo.HeaderText = "FaultCodeByOp";
combo.DataPropertyName = "FaultCodeByOp";
dataGridView1.Columns.AddRange(combo);
没有改变任何东西。
答
我不知道我做了什么，但它不再是灰色。现在它像其他列一样白......但它不下拉，也不显示列表的成员。
你好，对于迟到的回复感到抱歉。我当时正在度假。我了解代码。也许在“Var rowindex = datagridview1.rows.Add（）”处有一个例外，它说“System.InvalidOperationException：当控件链接到数据时，通过编程将行添加到集合Datagridview中”。 ？ –