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Try <b>combo.SelectedItem.ToStrin<wbr />g()</b>:<br />
<br />

<pre><code id="code-20-37813243-1">private void btnShow_Click(object sender, EventArgs e)
		{
			label1.Text = &quot;Combobox 1: &quot; + comboBox1.SelectedItem.ToString() +
				&quot;Combobox 2: &quot; + comboBox2.SelectedItem.ToString() +
				&quot;Combobox 3: &quot; + comboBox3.SelectedItem.ToString() +
				&quot;Combobox 4: &quot; + comboBox4.SelectedItem.ToString();
		}</code></pre>
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Try combo.SelectedItem.ToString():



private void btnShow_Click(object sender, EventArgs e)
		{
			label1.Text = "Combobox 1: " + comboBox1.SelectedItem.ToString() +
				"Combobox 2: " + comboBox2.SelectedItem.ToString() +
				"Combobox 3: " + comboBox3.SelectedItem.ToString() +
				"Combobox 4: " + comboBox4.SelectedItem.ToString();
		}

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I have a winform with 4 comboboxes. I used the IDE and &quot;Items&quot; and added the values manually to the combo box. 3 or 4 values in each combobox.<br />
<br />
I open the form and nothing is selected. User has to selected something from the combox box. I have checked for &quot;combo.SelectedValue&quot;, &quot;combo.text&quot;, &quot;combo.selectedtext&quot;, and &quot;combo.selectedindex&quot; . <b>But, even when I select something from the dropdown, the values show as blank.</b> I don't have an event or anything. I click a button and want to validate all combo boxes at the same time...<br />
<br />
what do i need to do??
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I have a winform with 4 comboboxes. I used the IDE and "Items" and added the values manually to the combo box. 3 or 4 values in each combobox.

I open the form and nothing is selected. User has to selected something from the combox box. I have checked for "combo.SelectedValue", "combo.text", "combo.selectedtext", and "combo.selectedindex" . But, even when I select something from the dropdown, the values show as blank. I don't have an event or anything. I click a button and want to validate all combo boxes at the same time...

what do i need to do??

Winform combobox validate for empty string

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.