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How to insert Checkbox into the Form from a database. Where the table field will be the Checkbox Text?
Example:
Tabela --
0|Versao
1|2.9.15
2|2.9.16
put 2 Checkbox for the user to choose the supported version.
1 answer
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Whereas you have the values you need in a Datatable:
DataTable dt = new DataTable();
int h = 0;
foreach (DataRow r in dt.Rows)
{
CheckBox cb = new CheckBox();
cb.Text = r["nome_do_campo"].ToString();
cb.Checked = false;
cb.Parent = this;
cb.Location = new System.Drawing.Point(0, h);
h += cb.Height;
cb.Show();
}
Implementing the code to use the Checkedchanged event:
private void MontarCheckBox(DataTable dt)
{
int h = 0;
foreach (DataRow row in dt.Rows)
{
CheckBox cb = new CheckBox();
cb.Text = row["Version"].ToString();
cb.Name = row["Version"].ToString();
cb.Checked = false;
cb.Parent = this;
cb.Location = new System.Drawing.Point(0, h);
h += cb.Height;
cb.CheckedChanged += cb_CheckedChanged;
cb.Show();
}
}
void cb_CheckedChanged(object sender, EventArgs e)
{
//sender é o objeto CheckBox onde o evento ocorreu
CheckBox cb = ((CheckBox)sender);
if (cb.Checked)
{
string versao = cb.Name;
//Faz o processamento que deseja
}
}
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Thank you very much, it worked :)
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for nothing, =] Dispose.
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Another question. I wanted now with the previous code executed, imagining that I have 2 checkbox selected. Now I want when these two had selected, to record the value of these chechbox in a variable, and then be able to compare these to other values.
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in this case, set a name or tag for the checkbox
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cb. Name = r["column_name"]. Tostring();
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then you can in some event, trigger the recording of the data, be it button, load, anything.
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for the checkbox check event, use: cb.Checkedchanged += cb_CheckedChanged;
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void cb_CheckedChanged(Object Sender, Eventargs e) { //event implementation }
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I’m gonna put it here like I did, because it’s not working
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`int h = 0; foreach (Datarow Row in dt.Rows) { Checkbox cb = new Checkbox(); cb. Text = Row["Version"]. Tostring(); cb.Name = Row["Version"]. Tostring(); cb.Checked = false; cb.Parent = this; cb.Location = new System.Drawing.Point(0, h); h += cb.Height; cb.Checkedchanged += Cb_checkedchanged; cb.Show(); }
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private void Cb_checkedchanged(Object Sender, Eventargs e) { Checkbox cb = new Checkbox(); if(cb.Checked) { Start(); } }
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But error :cb.Checkedchanged += Cb_checkedchanged;
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is that I will need the name of the selected checkbox to do an update afterwards
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moment, I will update the answer
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ready, updated the answer
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Hello Ana, all right? So, if I got it right you just want the text of the check box to be 2.9.15 or 2.9.16, is that it? I couldn’t quite understand your question. It is possible that you are flagged by it.
– Ulisses Hen
Hello :) Yes exactly, I wanted the text that appears in the "checkbox text" sent by the database.
– Ana Carvalho