[英]How to show data in datagridview without using database
I want to show data in datagridview without using Database. 我想在不使用数据库的情况下在datagridview中显示数据。 In my UI there are 3 fields in which I inserted values and want to show them in data grid view when I execute the program it is not giving any error nor showing any values in datagridview.
在我的UI中,有3个字段,我在其中插入了值,并希望在执行程序时在数据网格视图中显示它们,它没有给出任何错误,也没有在datagridview中显示任何值。
private void Submit_Click(object sender, EventArgs e)
{
DataRow dr = dt.NewRow();
dr[0] = txtBox1.Text;
dr[1] = txtBox2.Text;
dr[2] = txtBox3.Text;
dataGridView1.DataSource = dt;
}
private void Form1_Load(object sender, EventArgs e)
{
dt = new DataTable();
DataColumn dc1 = new DataColumn("Name");
DataColumn dc2 = new DataColumn("Email");
DataColumn dc3 = new DataColumn("ConatctNumber");
dt.Columns.Add(dc1);
dt.Columns.Add(dc2);
dt.Columns.Add(dc3);
dt.Rows.Add(dc1);
DataRow dr = dt.NewRow();
dataGridView1.DataSource = dt;
}
DataTable dt = new DataTable();
private void Form1_Load(object sender, EventArgs e)
{
dt.Columns.Add ("Name");
dt.Columns.Add ("Email");
dt.Columns.Add ("ConatctNumber");
// dt.Rows.Add(dc1); dc1 is a column not a row >>>
// DataRow dr = dt.NewRow(); not necessary
dataGridView1.DataSource = dt;
}
private void Submit_Click(object sender, EventArgs e)
{
DataRow dr = dt.NewRow();
dr[0] = txtBox1.Text;
dr[1] = txtBox2.Text;
dr[2] = txtBox3.Text;
dt.rows.add(dr); //You forgot to add new row in your datatable
// dataGridView1.DataSource = dt; is already definedin loadForm
}
You're almost there, but you need to do is add the new row to the DataTable
: 您快到了,但是您需要做的是将新行添加到
DataTable
:
DataRow dr = dt.NewRow();
dr[0] = txtBox1.Text;
dr[1] = txtBox2.Text;
dr[2] = txtBox3.Text;
dt.Rows.Add(dr); // <<< ====
dataGridView1.DataSource = dt;
Note that there is no constructor for DataRow
but the DataTable.NewRow()
call only uses the table layout as a template for the columns in the new row; 请注意,没有
DataRow
构造函数,但是DataTable.NewRow()
调用仅将表布局用作新行中列的模板 。 it doesn't actually add it to the table. 它实际上并没有将其添加到表中。
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