在datagridviewcomboboxcolumn C＃中的Form Load上显示默认选择的值 [英] Display default selected value on Form Load in datagridviewcomboboxcolumn C#

问题描述

我在datagridview中有一个datagridviewcomboboxcolumn，我希望在表单加载/显示时默认显示在datagridviewcomboboxcolumn中选择的Item2。



我的数据库中有3个项目表记录



id名称

1项目1

2项目2

3项目3



如果有人有任何想法，请帮助我。

提前致谢。

解决方案

你可以使用单元格格式化事件，如下例所示： -

 DataGridViewComboBoxColumn cmbCol; 
 private void Form7_Load（object sender，EventArgs e）
 {
 DataTable dt = new DataTable（）; 
 dt.Columns.Add（c1，typeof（int））; 
 dt.Columns.Add（c2）; 
 for（int j = 0; j< 5; j ++）
 {
 dt.Rows.Add（j，c+ j.ToString（））; 
} 
 DataTable dt2 = new DataTable（）; 
 dt2.Columns.Add（c1，typeof（int））; 
 dt2.Columns.Add（c2）; 
 for（int j = 5; j< 10; j ++）
 {
 dt2.Rows.Add（j，c+ j.ToString（））; 
} 
 this.dataGridView1.DataSource = dt; 
 cmbCol = new DataGridViewComboBoxColumn（）; 
 cmbCol.DisplayMember =c2; 
 cmbCol.ValueMember =c1; 
 //cmb.DataPropertyName =c1; 
 cmbCol.DataSource = dt2; 
 this.dataGridView1.Columns.Add（cmbCol）; 
 this.dataGridView1.CellFormatting + = new DataGridViewCellFormattingEventHandler（dataGridView1_CellFormatting）; 
} 
 void dataGridView1_CellFormatting（object sender，DataGridViewCellFormattingEventArgs e）
 {
 if（e.ColumnIndex == 2）
 {
 DataTable dt = this。 cmbCol.DataSource as DataTable; 
 e.Value = dt.Rows [0] [c2]; 
} 
} 
} 

您好，您可以使用CurrentCell Properties

 dataGrid.CurrentCell = dataGrid [columnIndex，rowIndex]; 

希望有帮助

I have a datagridviewcomboboxcolumn in datagridview and I want to display Item2 as selected in datagridviewcomboboxcolumn by default when form loads/displayed.

I have 3 items in my database table Records

id Name
1 Item1
2 Item2
3 Item3

If somebody have any idea please do help me.
Thanks in advance.

解决方案

you can use cell formatting event like in the below case :-

DataGridViewComboBoxColumn cmbCol;
private void Form7_Load(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt.Columns.Add("c1",typeof(int));
dt.Columns.Add("c2");
for (int j = 0; j < 5; j++)
{
dt.Rows.Add(j,"c"+j.ToString());
}
DataTable dt2 = new DataTable();
dt2.Columns.Add("c1", typeof(int));
dt2.Columns.Add("c2");
for (int j = 5; j < 10; j++)
{
dt2.Rows.Add(j, "c" + j.ToString());
}
this.dataGridView1.DataSource = dt;
cmbCol = new DataGridViewComboBoxColumn();
cmbCol.DisplayMember = "c2";
cmbCol.ValueMember = "c1";
//cmb.DataPropertyName = "c1";
cmbCol.DataSource = dt2;
this.dataGridView1.Columns.Add(cmbCol);
this.dataGridView1.CellFormatting += new DataGridViewCellFormattingEventHandler(dataGridView1_CellFormatting);
}
void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
if (e.ColumnIndex == 2)
{
DataTable dt = this.cmbCol.DataSource as DataTable;
e.Value = dt.Rows[0]["c2"];
}
}
}

Hi you may use CurrentCell Properties

dataGrid.CurrentCell = dataGrid[columnIndex, rowIndex];

Hope it helps

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